In classical economics and all micro-economics labour is one of three factors of production, the others being land and capital. It is a measure of the work done by human beings. There are macro-economic system theories which have created a concept called human capital (referring to the skills that workers possess, not necessarily their actual work), although there are also counterposing macro-economic system theories that think human capital is a contradiction in terms.
| General subfields within the Labor movement |
| Child labor |
| Labor in economics |
| Labor history |
| Labor law |
| Labor rights |
| Labor union |
The price of labour is called a wage, and the price of labour per period of time is referred to as the wage rate. The two terms are sometimes used interchangeably.
Other frequently used terms include:
Economists measure labour in terms of hours worked, total wages, or efficiency.