| bhid | household identification number |
| bpno | person number |
| bleshno | lifetime employment history event number |
| bleshst | lifetime employment history status |
| bleshem | month lifetime emp. hist. status changed |
| bleshey | year lifetime emp. history status change |
| bleshne | lifetime emp. history status not ended |
| bleshsm | month lifetime emp. hist. status started |
| bleshsy | year lifetime emp. history status starte |
| bleslen | length of emp. history spell (months) |
| bleshey4 | year emp. history status changed: 4 digi |
| bleshsy4 | year emp. history status started: 4 digi |
| pid | cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |