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Reason for working part time last week

Codes and Frequencies

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WHYPTLWK reports the reason why respondents worked part-time (a total of less than 35 hours combined for all jobs) during the previous week. Some of these individuals normally worked a part-time job; others usually worked full-time but worked less than 35 hours during the week in question. These two groups can be identified using USFTPTLW, which reports whether persons who worked part-time (less than 35 hours) during the preceding week usually worked full-time (35 hours or more).

The total number of hours the respondent worked during the previous week is reported in AHRSWORKT. WHYPTLYreports the reason why respondents worked part-time (less than 35 hours) for at least one week during the previous calendar year.


Recognized responses for this variable are comparable for 1962-1987 and for 1988 forward, but they are not consistent across the two time periods. If users group together responses which share the same first two digits (under the IPUMS composite coding scheme), a fairly high degree of comparability can be attained. For example, the 1962-1987 data include the response "too busy with house, school, etc." (code 120). This category is roughly comparable to other, more detailed responses for 1988 forward (child care problems, other family/personal obligations, school and/or training, civic/military duty) with codes from 121 to 124.


  • 1962 -1967 (ASEC): Persons age 14+ who worked part time last week (less than 35 hours) (pre-1968 samples do not include persons under age 14).
  • 1968+ (ASEC): Civilians age 14+ who worked part time last week (less than 35 hours).
  • 1976-1988 (non-ASEC): Persons age 14+.
  • 1989+ (non-ASEC): Civilians age 15+ who worked part time last week (less than 35 hours).


Years Jan Feb ASEC Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1962 – 1975 - - X - - - - - - - - - -
1976 – 2023 X X X X X X X X X X X X X
2024 X - - - - - - - - - - - -


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