hired hand

1. A paid employee, especially on a farm or ranch.
2. Informal. A paid employee.

noun

One who is employed by another: employee, hireling, jobholder, worker. Informal hire. See over/under, work/play.

Also, hired man or girl. A person engaged to assist with farm or domestic chores, as in We need extra hired hands during the harvest, or She was looking for a hired girl to do the laundry. This use of hired dates from the 1200s and referred to someone employed for wages as opposed to a slave or serf. The use of girl now may be offensive.

The noun has one meaning:

Meaning #1: a hired laborer on a farm or ranch
  Synonyms: hand, hired man