Columbia subject headings:
Labor--Forecasting.
Leisure--Forecasting.
Occupations--Forecasting.
Self-employed--Forecasting.
Harvard subject headings:
Leisure--Forecasting.
Occupations--Forecasting
Self-employed--Forecasting.
Work--Forecasting
Princeton subject headings:
Leisure--Forecasting.
Occupations--Forecasting.
Self-employed--Forecasting.
Work--Forecasting.