Changes for page Resolution III: Resolution to amend Resolution 16th ICLS concerning the measurement of employment-related income
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... ... @@ -167,125 +167,105 @@ 167 167 168 168 = Measurement of working time in employment = 169 169 170 -42. One of the requirements of the measurement of employment-related income is that the part of the income directly generated by a job be related to the working time which has gone into that job. Income and employment data should therefore refer, or be convertible, to the same period. 170 +1. One of the requirements of the measurement of employment-related income is that the part of the income directly generated by a job be related to the working time which has gone into that job. Income and employment data should therefore refer, or be convertible, to the same period. 171 +1. For each job, working time should be, expressed in the number of hours, days, weeks, etc., during which the activity has been carried out. Where the activity is carried out by several contributing family workers and income is the result of a joint labour input (e.g. in household enterprises), efforts should be made to measure the number of hours, days, weeks, etc., worked by each member. 172 +1. At the individual level, employment-related income should be measured for each job carried out during the reference period, whether in employment for pay or for profit, together with the corresponding labour input in each activity. During a one-year reference period, individuals may be, for different periods, employed, unemployed and out of labour force during which some or no employment-related income accrues. Each of these periods should be identified, account being taken of all jobs performed, including casual or simultaneous employment. The main situations may be classified into broad categories relevant to the measurement of employment-related wellbeing (or hardship). 171 171 172 -43. For each job, working time should be, expressed in the number of hours, days, weeks, etc., during which the activity has been carried out. Where the activity is carried out by several contributing family workers and income is the result of a joint labour input (e.g. in household enterprises), efforts should be made to measure the number of hours, days, weeks, etc., worked by each member. 173 - 174 -44. At the individual level, employment-related income should be measured for each job carried out during the reference period, whether in employment for pay or for profit, together with the corresponding labour input in each activity. During a one-year reference period, individuals may be, for different periods, employed, unemployed and out of labour force during which some or no employment-related income accrues. Each of these periods should be identified, account being taken of all jobs performed, including casual or simultaneous employment. The main situations may be classified into broad categories relevant to the measurement of employment-related wellbeing (or hardship). 175 - 176 176 == Measurement of hours of work == 177 177 178 - 45. The measurement of hours of work is dealt with in the resolution concerning the measurement of working time adopted by the 18^^th^^ ICLS in 2008. The working time concepts defined in this resolution are relevant for the measurement and analysis of employmentrelated income, and countries should aim at applying them to produce working timestatistics.176 +1. The measurement of hours of work is dealt with in the resolution concerning the measurement of working time adopted by the 18^^th^^ ICLS in 2008. The working time concepts defined in this resolution are relevant for the measurement and analysis of employmentrelated income, and countries should aim at applying them to produce working time 179 179 180 - 46. Hoursof work should be identified for each job separately for job-level analysisand for all jobs for person-level analysis.178 +statistics. 181 181 182 - =Data sources=180 +1. Hours of work should be identified for each job separately for job-level analysis and for all jobs for person-level analysis. 183 183 184 - 47.The collection of dataon income related to employment for pay or for profitshould be based on theregular national statistical programmes,using all available sources.182 +=== Data sources === 185 185 186 -48. One such source could be general or specialized household surveys, with individual household members as observation units. 184 +1. The collection of data on income related to employment for pay or for profit should be based on the regular national statistical programmes, using all available sources. 185 +1. One such source could be general or specialized household surveys, with individual household members as observation units. 186 +1. Other sources of data include establishment surveys, administrative records (such as income tax and social security records), informal sector surveys (such as mixed surveys, according to the guidelines contained in the ILO resolution concerning statistics on the informal economy adopted by the 21st ICLS), agricultural surveys, surveys of small economic units and population censuses. 187 +1. The choice of the appropriate sources of data should be based on the results of a cost-benefit analysis, taking into account factors such as the desired accuracy and details required from the results, the availability of different sources, the existence and design of labour force or other household surveys and the feasibility of adding new topics to these surveys or of launching separate surveys, and the response burden (particularly for the population census where questionnaire content must typically be limited). 188 +1. Several sources may be used for the collection of data on employment-related income. The use of different sources equally enables the comparison of the data and the evaluation of its quality. 189 +1. Labour force surveys which collect data on income constitute an essential source of data on the income-generating capacity of jobs and its links to the labour market activities of individuals. Additional variables and appropriate questions accompanied by detailed instructions addressed to all individuals, including those not employed at the survey date, may, in principle, cover nearly all income during a given period, including those employmentrelated benefits received from sources other than the employer and as a result of current or former employment (e.g. received from social security or insurance schemes or the State). Income data should be linked to each person's educational and other characteristics, for each activity and occupation, in order to establish the link between income and type of occupation, type of contract, skill level, duration of employment and unemployment, seniority in trade or occupation, or other characteristics of interest. 190 +1. Household budget and household income and expenditure surveys are particularly suitable for collecting data on all types of income, including income components in cash, in kind and in services, and income deductions. Special care should be taken in such surveys to better identify the relationship between income and employment. In particular, detailed information on income related to employment for pay or for profit should be collected in respect of each activity performed or job held by each household member, together with the corresponding volume of employment in terms of hours of work. 191 +1. In order to improve the quality and relevance of income-related questions in labour force and other household surveys, efforts should be made in particular: 192 +1*. to collect income data directly from the persons concerned and avoid the use of proxy respondents as much as possible; 193 +1*. to obtain disaggregated data on the components of employment-related income and link income to working time in each job and for each individual member covered by the survey; 194 +1*. to reduce recall errors and pinpoint the seasonal characteristics of certain jobs using various solutions, such as conducting repeated surveys or surveys with a sample spread over the year and a shorter reference period such as a quarter or a season; using the month-to-month recall approach to obtain information on each of the 12 months of the reference period; fixing data collection at a time which coincides with the collection of income data for income tax and social security purposes, etc. 187 187 188 -49. Other sources of data include establishment surveys, administrative records (such as income tax and social security records), informal sector surveys (such as mixed surveys, according to the guidelines contained in the ILO resolution concerning statistics on the informal economy adopted by the 21st ICLS), agricultural surveys, surveys of small economic units and population censuses. 189 - 190 -50. The choice of the appropriate sources of data should be based on the results of a cost-benefit analysis, taking into account factors such as the desired accuracy and details required from the results, the availability of different sources, the existence and design of labour force or other household surveys and the feasibility of adding new topics to these surveys or of launching separate surveys, and the response burden (particularly for the population census where questionnaire content must typically be limited). 191 - 192 -51. Several sources may be used for the collection of data on employment-related income. The use of different sources equally enables the comparison of the data and the evaluation of its quality. 193 - 194 -52. Labour force surveys which collect data on income constitute an essential source of data on the income-generating capacity of jobs and its links to the labour market activities of individuals. Additional variables and appropriate questions accompanied by detailed instructions addressed to all individuals, including those not employed at the survey date, may, in principle, cover nearly all income during a given period, including those employmentrelated benefits received from sources other than the employer and as a result of current or former employment (e.g. received from social security or insurance schemes or the State). Income data should be linked to each person's educational and other characteristics, for each activity and occupation, in order to establish the link between income and type of occupation, type of contract, skill level, duration of employment and unemployment, seniority in trade or occupation, or other characteristics of interest. 195 - 196 -53. Household budget and household income and expenditure surveys are particularly suitable for collecting data on all types of income, including income components in cash, in kind and in services, and income deductions. Special care should be taken in such surveys to better identify the relationship between income and employment. In particular, detailed information on income related to employment for pay or for profit should be collected in respect of each activity performed or job held by each household member, together with the corresponding volume of employment in terms of hours of work. 197 - 198 -54. In order to improve the quality and relevance of income-related questions in labour force and other household surveys, efforts should be made in particular: 199 - 200 -* to collect income data directly from the persons concerned and avoid the use of proxy respondents as much as possible; 201 -* to obtain disaggregated data on the components of employment-related income and link income to working time in each job and for each individual member covered by the survey; 202 -* to reduce recall errors and pinpoint the seasonal characteristics of certain jobs using various solutions, such as conducting repeated surveys or surveys with a sample spread over the year and a shorter reference period such as a quarter or a season; using the month-to-month recall approach to obtain information on each of the 12 months of the reference period; fixing data collection at a time which coincides with the collection of income data for income tax and social security purposes, etc. 203 - 204 204 One of the limitations of household surveys is that income can usually only be measured net, i.e. after deduction of social security contributions, income taxes, etc. 205 205 206 -55. Establishment surveys can also serve as a basis for the collection of data on those components of income related to employment for pay received directly from the employer. For the purpose of measuring employment-related income, the coverage of traditional establishment surveys should be extended, or specially designed surveys should be carried out (i) to cover small establishments, and household enterprises with employees, and (ii) to include and identify separately permanent, fixed-term, short-term and casual employees; paid apprentices and interns; employers in corporations and owner-operators of corporations without employees, along with additional characteristics of interest such as part-time nature of the job and the related volume of working time in employment. For the compilation of structural indicators on income related to pay, structural surveys of earnings, which enable information to be collected on income levels and trends according to detailed employees' characteristics (sex, age, occupation, conditions of employment, etc.) are the most appropriate establishment surveys for the compilation of data on income related to employment for pay. 198 +1. Establishment surveys can also serve as a basis for the collection of data on those components of income related to employment for pay received directly from the employer. For the purpose of measuring employment-related income, the coverage of traditional establishment surveys should be extended, or specially designed surveys should be carried out (i) to cover small establishments, and household enterprises with employees, and (ii) to include and identify separately permanent, fixed-term, short-term and casual employees; paid apprentices and interns; employers in corporations and owner-operators of corporations without employees, along with additional characteristics of interest such as part-time nature of the job and the related volume of working time in employment. For the compilation of structural indicators on income related to pay, structural surveys of earnings, which enable information to be collected on income levels and trends according to detailed employees' characteristics (sex, age, occupation, conditions of employment, etc.) are the most appropriate establishment surveys for the compilation of data on income related to employment for pay. 199 +1. When the information collected in establishment surveys is supplemented by data drawn from other sources, such as tax and social security records, the social security benefits should relate to the same set of employees for whom total remuneration data have been collected from the establishments. 200 +1. In order to alleviate the difficulties experienced in field surveys in general, related to the reluctance of interviewed persons to provide income data, the difficulty in quantifying nonmonetary income, the relatively heavy workload for the statistical agencies and the risk of inaccurate responses, extra care should be taken in the preparatory phase, i.e. in the conception of appropriate definitions and guidelines, the drafting of directives and the training of officers. At a subsequent stage, special attention should be paid to the analysis and interpretation of the resulting income data and total and item nonresponse should be partly compensated through adjustment procedures. 207 207 208 - 56.When the informationcollected in establishment surveys is supplemented by data drawn from other sources, such as tax and socialsecurity records, the social security benefits should relate to the same set of employees for whom total remunerationdata have been collected from the establishments.202 +=== Data compilation === 209 209 210 -57. In order to alleviate the difficulties experienced in field surveys in general, related to the reluctance of interviewed persons to provide income data, the difficulty in quantifying nonmonetary income, the relatively heavy workload for the statistical agencies and the risk of inaccurate responses, extra care should be taken in the preparatory phase, i.e. in the conception of appropriate definitions and guidelines, the drafting of directives and the training of officers. At a subsequent stage, special attention should be paid to the analysis and interpretation of the resulting income data and total and item nonresponse should be partly compensated through adjustment procedures. 204 +1. In order to measure the income-generating capacity of different jobs or economic activities, employment-related income should be related to the job variables (regular/casual, full/parttime, etc.) and measured within the framework of employment duration and working time. 205 +1. In order to assess employment-related well-being, data should be collected on income derived from all jobs for each person. For each job, income data should be collected along with the individual's status in employment, the length of the reference period to which the income refers, working time in hours, days, months, etc., where relevant. 206 +1. Data should be collected on the components, as well as on the aggregate, of income related to employment for pay or for profit, along the following lines: 207 +11. Gross income related to employment for pay, excluding social security contributions as in paragraph 12: 211 211 212 -= Data compilation = 209 +* 210 +** total cash remuneration; 211 +** total imputed value of remuneration in kind and services; 212 +** profit-related pay; 213 +** employment-related social security benefits: 214 +*** received from employer; 215 +*** received from social security and insurance schemes or the State. 213 213 214 -58. In order to measure the income-generating capacity of different jobs or economic activities, employment-related income should be related to the job variables (regular/casual, full/parttime, etc.) and measured within the framework of employment duration and working time. 217 +1. 218 +11. Gross income related to employment for profit, excluding social security contributions as in paragraph 21: 215 215 216 -59. In order to assess employment-related well-being, data should be collected on income derived from all jobs for each person. For each job, income data should be collected along with the individual's status in employment, the length of the reference period to which the income refers, working time in hours, days, months, etc., where relevant. 217 - 218 -60. Data should be collected on the components, as well as on the aggregate, of income related to employment for pay or for profit, along the following lines: 219 - 220 -* (a) Gross income related to employment for pay, excluding social security contributions as in paragraph 12: 221 -** total cash remuneration; 222 -*** total imputed value of remuneration in kind and services; 223 -*** profit-related pay; 224 -*** employment-related social security benefits: 225 -**** received from employer; 226 -**** received from social security and insurance schemes or the State. 227 -* (b) Gross income related to employment for profit, excluding social security contributions as in paragraph 21: 220 +* 228 228 ** gross profit or where relevant gross output less operating expenses; 229 229 ** consumption of fixed capital/depreciation; 230 230 ** net profit (or share of profit); 231 231 ** employment-related social security benefits. 232 232 233 -= Data classification = 226 +=== Data classification === 234 234 235 -61. Statistics of employment-related income should be classified by economic activity, status in employment and occupation or occupational group, at least according to the major groups and categories of the most recent version of the relevant international classifications. These statistics should be systematically disaggregated by sex in all analyses. Other important variables for cross-classifications of data on income related to employment for pay or for profit are sex, age, level of education, level of skill, seniority in job and the formal or informal status of the job. 228 +1. Statistics of employment-related income should be classified by economic activity, status in employment and occupation or occupational group, at least according to the major groups and categories of the most recent version of the relevant international classifications. These statistics should be systematically disaggregated by sex in all analyses. Other important variables for cross-classifications of data on income related to employment for pay or for profit are sex, age, level of education, level of skill, seniority in job and the formal or informal status of the job. 229 +1. Disaggregations of the main status in employment categories, as defined in ICSE according to the type of economic risk, may be relevant in order to distinguish specific groups such as owner-operators of corporations from employees, employers from other independent workers, permanent employees from temporary, seasonal or casual employees, etc. 230 +1. In order to measure the relationship between employment and income, account should be taken of all activities performed during the reference year, including simultaneous jobs. The employment experience of individuals during the reference period may be assessed through the identification of periods when they were employed (full or part time), unemployed and out of labour force. At the aggregate level, the main situations may be regrouped into broad categories relevant to the measurement of employment-related wellbeing, such as: 231 +1*. full-year/full-time employment; 232 +1*. part-year/part-time employment with no unemployment: 236 236 237 - 62. Disaggregationsofthe main status in employment categories,as defined in ICSE accordingto the type of economic risk, mayberelevant in order to distinguish specific groups such as owner-operators ofcorporationsfrom employees, employersfrom otherindependent workers, permanentemployees from temporary,seasonal or casual employees, etc.234 +o for voluntary reasons; o for involuntary reasons; 238 238 239 -63. In order to measure the relationship between employment and income, account should be taken of all activities performed during the reference year, including simultaneous jobs. The employment experience of individuals during the reference period may be assessed through the identification of periods when they were employed (full or part time), unemployed and out of labour force. At the aggregate level, the main situations may be regrouped into broad categories relevant to the measurement of employment-related wellbeing, such as: 236 +1. 237 +1*. part-year employment with some unemployment; ● mainly unemployment: o with some employment; o without employment; 238 +1*. mainly out of labour force with some employment. 239 +1. Further variables may be introduced, such as length of employment, spells and duration of unemployment, etc. Such classifications would permit the identification of the main types of employment-related hardship, the severity of employment problems and the degree of labour force attachment of persons experiencing economic hardship. 240 240 241 -* full-year/full-time employment; 242 -* part-year/part-time employment with no unemployment: 243 -** for voluntary reasons; 244 -** for involuntary reasons; 245 -* part-year employment with some unemployment; 246 -** mainly unemployment: 247 -** with some employment; 248 -** without employment; 249 -* mainly out of labour force with some employment. 241 +=== Periodicity === 250 250 251 -64. Further variables may be introduced, such as length of employment, spells and duration of unemployment, etc. Such classifications would permit the identification of the main types of employment-related hardship, the severity of employment problems and the degree of labour force attachment of persons experiencing economic hardship. 252 - 253 -= Periodicity = 254 - 255 255 65. Countries should endeavour to regularly collect, compile and disseminate statistics of employment-related income at least every five years. 256 256 257 -= Analytical measures = 245 +=== Analytical measures === 258 258 259 -66. Statistics of average income related to employment for pay and employment for profit should be compiled per time unit. The time unit in which average employment-related income is expressed, e.g. hour, day, week or month, should depend mainly on how meaningful the figures would be in the country concerned and on the feasibility of data collection. Where possible, estimates of average annual income related to employment for pay and employment for profit should be compiled. 247 +1. Statistics of average income related to employment for pay and employment for profit should be compiled per time unit. The time unit in which average employment-related income is expressed, e.g. hour, day, week or month, should depend mainly on how meaningful the figures would be in the country concerned and on the feasibility of data collection. Where possible, estimates of average annual income related to employment for pay and employment for profit should be compiled. 248 +1. Where feasible, estimates of hourly employment-related income should also be developed, based on the annual estimates of income and on the corresponding volume of employment expressed in terms of hours of work and work duration. 260 260 261 - 67.Where feasible, estimatesof hourly employment-relatedincome shouldalso be developed, basedon theannual estimatesofincomeand on the corresponding volumeofemploymentexpressedintermsof hours of work and work duration.250 +=== Complementary approach to non-measurable benefits === 262 262 263 -= Complementary approach to non-measurable benefits = 252 +1. In view of, on the one hand, the importance generally attached to the growth of forms of compensation schemes offering current and deferred entitlements to various benefits to persons in employment for pay (e.g. pensions and health plans, life insurance, flexible benefits and the like), and, on the other hand, the measurement difficulties inherent in the assessment of the value of such entitlements, efforts should be made to conduct surveys of employee benefits, in such a way as to provide data on the incidence and characteristics of the benefits received by persons in employment for pay (e.g. participation requirements, employers' and employees' contributions (where appropriate), health-care deductibles, pension benefit formulas, paid leave provisions, number of beneficiaries). Data should be compiled and published by size of establishment and various employer and employee characteristics (major industry groups, full-time and part-time employment, etc.). 253 +1. Where relevant, efforts should be made to collect, compile and disseminate similar information on social security and other employment-related benefits which are received by persons employed for profit. 264 264 265 - 68.In view of, on the one hand, the importance generally attached to the growth of forms of compensation schemes offering currentand deferred entitlements tovarious benefitstopersons in employmentforpay (e.g. pensions and healthplans, lifeinsurance, flexible benefits and the like), and, on the other hand, the measurement difficulties inherent in the assessment of the value of such entitlements, efforts should be made to conduct surveys of employee benefits, in such away as toprovidedataon the incidence and characteristics ofthe benefits received by persons in employmentforpay (e.g. participation requirements, employers' and employees' contributions(where appropriate), health-care deductibles, pension benefit formulas, paid leave provisions, number of beneficiaries). Data should be compiled and published bysizeof establishment and variousemployerand employee characteristics(major industry groups, full-time and part-time employment, etc.).255 +=== Valuation of the work of contributing family workers === 266 266 267 -69. Where relevant, efforts should be made to collect, compile and disseminate similar information on social security and other employment-related benefits which are received by persons employed for profit. 257 +1. In household enterprises, and more generally in employment for profit, activities may be jointly performed by several members of the household without formal or individualized earnings or income. In that case, the profit or mixed income derived by the head of the household enterprise also rewards the participation of contributing family workers (as defined in the most recent version of ICSE) whose participation in the economic activity is of varying duration and intensity and at different levels of responsibility. It is therefore necessary to assess the contribution of these workers, disaggregated at least by sex and age, to the economic development of household enterprises. 258 +1. Contributing family workers generally have jobs whose occupational content and level of responsibilities differ from that of the owner or partners of the enterprise. The measurement of their participation involves: (i) the measurement of the volume of employment put into the activity, in terms of hours, days, weeks, etc., and (ii) the imputation of an income value to their work. This imputed value can be based on the market rates for equivalent occupations. 259 +1. Several variants may be calculated, using for instance the minimum wage of certain suitable occupations, or the average wage, by sex and occupation or sector, of substitute workers. Wages may be allocated "gross" or "net". Imputed gross wages (where relevant, including the employer's imputed contributions to social security and similar schemes) can provide an indication of the expense foregone by the head of the household enterprise, while imputed wages net of taxes and social security contributions appear more suitable since the labour of contributing family workers does not usually generate social security contributions. 268 268 269 -= Valuationof thework of contributing family workers=261 +=== Data dissemination === 270 270 271 -70. In household enterprises, and more generally in employment for profit, activities may be jointly performed by several members of the household without formal or individualized earnings or income. In that case, the profit or mixed income derived by the head of the household enterprise also rewards the participation of contributing family workers (as defined in the most recent version of ICSE) whose participation in the economic activity is of varying duration and intensity and at different levels of responsibility. It is therefore necessary to assess the contribution of these workers, disaggregated at least by sex and age, to the economic development of household enterprises. 263 +1. Where possible, statistics of average income related to employment for pay or profit should be compiled and disseminated regularly, together with information on the quality of the statistics. Detailed descriptions of the concepts and methods used in the compilation of statistics on income related to employment for pay or profit should be disseminated by the responsible statistical office. In particular, the descriptions should mention the nature and types of payments and benefits included in each of the four major groups of components of income related to employment for pay, the types of employment-related benefits received by persons in employment for profit, the source(s) of data and the methodology used in collecting and compiling the statistics on income related to employment for pay or profit. 264 +1. Dissemination of the statistics of employment-related income should be in accordance with Article 4 of the Labour Statistics Convention, 1985 (No. 160), which protects the confidentiality of information relating to individuals, households, employers, etc. 265 +1. To facilitate the analysis of the statistical series compiled on income related to employment for pay or profit, the results of surveys on employment-related income should be accompanied by information on the various types of schemes and plans covering persons in employment for pay and profit, in particular on the financing of statutory social security schemes and the coverage of benefits. 266 +1. The credibility and the relevance of statistics on income related to employment for pay or profit will be increased if they can be disseminated as soon as possible after their compilation, fitted into broader statistical systems (such as the national accounts or labour accounts) and used in connection with relevant demographic and economic time series. Countries should therefore endeavour to develop consistent time series showing income dynamics and revealing vulnerable groups of persons. 267 +1. Countries which have carried out studies on the level and composition of income related to employment for pay or profit should communicate their results to the International Labour Office in order to facilitate international comparisons and interpretation of the statistics. 272 272 273 -71. Contributing family workers generally have jobs whose occupational content and level of responsibilities differ from that of the owner or partners of the enterprise. The measurement of their participation involves: (i) the measurement of the volume of employment put into the activity, in terms of hours, days, weeks, etc., and (ii) the imputation of an income value to their work. This imputed value can be based on the market rates for equivalent occupations. 274 - 275 -72. Several variants may be calculated, using for instance the minimum wage of certain suitable occupations, or the average wage, by sex and occupation or sector, of substitute workers. Wages may be allocated "gross" or "net". Imputed gross wages (where relevant, including the employer's imputed contributions to social security and similar schemes) can provide an indication of the expense foregone by the head of the household enterprise, while imputed wages net of taxes and social security contributions appear more suitable since the labour of contributing family workers does not usually generate social security contributions. 276 - 277 -= Data dissemination = 278 - 279 -Where possible, statistics of average income related to employment for pay or profit should be compiled and disseminated regularly, together with information on the quality of the statistics. Detailed descriptions of the concepts and methods used in the compilation of statistics on income related to employment for pay or profit should be disseminated by the responsible statistical office. In particular, the descriptions should mention the nature and types of payments and benefits included in each of the four major groups of components of income related to employment for pay, the types of employment-related benefits received by persons in employment for profit, the source(s) of data and the methodology used in collecting and compiling the statistics on income related to employment for pay or profit. 280 - 281 -Dissemination of the statistics of employment-related income should be in accordance with Article 4 of the Labour Statistics Convention, 1985 (No. 160), which protects the confidentiality of information relating to individuals, households, employers, etc. 282 - 283 -To facilitate the analysis of the statistical series compiled on income related to employment for pay or profit, the results of surveys on employment-related income should be accompanied by information on the various types of schemes and plans covering persons in employment for pay and profit, in particular on the financing of statutory social security schemes and the coverage of benefits. 284 - 285 -The credibility and the relevance of statistics on income related to employment for pay or profit will be increased if they can be disseminated as soon as possible after their compilation, fitted into broader statistical systems (such as the national accounts or labour accounts) and used in connection with relevant demographic and economic time series. Countries should therefore endeavour to develop consistent time series showing income dynamics and revealing vulnerable groups of persons. 286 - 287 -Countries which have carried out studies on the level and composition of income related to employment for pay or profit should communicate their results to the International Labour Office in order to facilitate international comparisons and interpretation of the statistics. 288 - 289 289 === Further action === 290 290 291 291 1. In view of the complexity of the measurement of income related to employment for pay or profit, special efforts should be made to improve the use of existing sources of data and to enhance surveys in order to increase response rates and obtain the required information as accurately as possible.