The recently concluded U.S. federal government shutdown impacted CPS data collection and release timelines. Once the September 2025 monthly data are available, we will process and release them as quickly as possible via IPUMS.
Codes and Frequencies
Description
Class of worker, longest job last year - 1976-2025
Unicon Corporation made the following notes about this variable:
* user must restrict sample to intended universe to differentiate between NIU=0 values and valid=0 values.
Universe
- 1976-1987: Civilian adults who worked last year.
- 1988-1989: Those who worked anytime during the last year even if temporary, part-ime, seasonal, or in the Armed Forces.
- 1990-2025: Those who worked anytime during the last year.
Availability
| Years | Jan | Feb | ASEC | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1976 – 2025 | - | - | X | - | - | - | - | - | - | - | - | - |
