The third party may not be someone who is affiliated with the operator, such as a hired hand or family member.
If a tractor chugged slowly the driver was a hired hand.
Nonetheless, the superintendent was still a hired hand of the corporation that owned and operated the mill and the entire village.
Idioms and Phrases with hired hand
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.