Auxiliary data for the LFS Sven Egmose, Statistics Denmark

Drawing sample Register on the population Extended with other data from registers 7 strata for two reasons Oversampling of groups of special interest Different response rates

Response rates 2018,Q3 Total 58,0 Men 56.7 Women 59.3 15-24 55.8 15-24 55.8 25-59 54.9 60-74 71.8 Without vocational educ. 52.9 Vocational education 58.6 Further education 61.3

Consequenses of no auxiliary data Overestimation of women Heavy overestimation of the elderly Heavy underestimation of persons without a vocational education (52.9 – 58.0) / 58.0 = 12.2 Percent

The enumeration process Stratas because of Different response rates Different attachment to the labour market

Stratas for enumeration Age Sex Address Level of education Socioeconomic status Number of children Citizenship Unemployment benefit Gross income

Status and response rates Empl Un- Outside Response empl lab. force rate Without voc. 49 5 46 52.9 Vocational 71 4 25 58.9 Further educ. 78 4 18 61.3 Total 68 4 27 58.0

Without auxiliary data Overestimation of employment by 26,000 ~ 1 Percent Underestimation of employment among persons with no vocational education by 50,000 ~ close to 10 Percent!

Data on level of education High quality statistical register Based on yearly reports on individuals from the educational institutions Register data used directly Except for actual educations because of delay Actual educations from interviews Lower response burden Higher data quality Avoid problems on recalling exact education

Activity code Variable on establishments But here on job Difficult to obtain A respondent knows what he is doing but does he know what is the activity of ‘his’ establishment? Example: salesman working for manufacturing Precise description needed in order to code.

One alternative solution Asking for name and address of the establishment Matching with the SBR Precise name and address needed Problems on recalling Google Maps used as a tool But still some problems

New strategy Using the Register based statistics on empl. (RSE) 6 Months delay for the RSE RSE activity code used for LFS employees without new job within six months Else: Name and address of establishment Else: coding based on respondents description Result of new strategy: Better quality and lower response burden