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Weeks worked last year


WKSWORK1 is a 2-digit numeric value.


WKSWORK1 reports the number of weeks, in single weeks, that the respondent worked for profit, pay, or as an unpaid family worker during the preceding calendar year. Respondents were prompted to count weeks in which they worked for even a few hours and to include paid vacation and sick leave as work. Information on weeks worked during the preceding year is available in the form of intervals for 1962 forward in the WKSWORK2 variable.


Apart from changes in the universe, WKSWORK1 is comparable over time.

Comparability with IPUMS-USA

The lower age limit for WKSWORK1 differs for IPUMS-USA and IPUMS-CPS. The 1980, 1990, and 2000 censuses and the ACS collected employment information on persons 16 and older, while the CPS used an age limit of 14 and older for 1976 to 1979 and 15 and older beginning in 1980. Members of the armed forces were not asked this question in the survey until 1990. The census and ACS data have incorporated responses from armed forces personnel before 1990 and continue to do so.


  • 1976-1979: Civilians age 14+ who worked last year.
  • 1980-1989: Civilians age 15+ who worked last year.
  • 1990-2023: Persons age 15+ who worked last year.


Years Jan Feb ASEC Apr May Jun Jul Aug Sep Oct Nov Dec
1976 – 2023 - - X - - - - - - - - -



Unharmonized Variables