- unionization, history of organizing efforts
- NLRB/ULP records (f)
- production workers/non-production (managerial) labor
- craft or assembly type workers
- organization of work units
- worker recruitment
- seniority
- worker turnover rates (quits, retirement, layoff, firing)
- multiple shifts
- overtime
- temporary, part-time, contingent, seasonal
- working conditions (record of worker injury/death), OSHA issues
- incentive/control methods
- "new" management methods (TQM, SPC, QWL, Quality Circles, etc.)
- worker training/education
- apprenticeship programs
[f] = individual company or firm