hireling:
(plural: ‘hirelings‘; pronunciation: ‘hire…lings’; for the right pronunciation of this word, please click here)

hirelings laying lawn grass
a person whose services may be hired, i.e. a person who works on payment of money on special occasions, not a regular worker or employee;
a temporary worker;
a drudge;
a person who cares only for the money he/she earns but does not care about the kind of work he/she does for that money, usually some offensive (bad) or unpleasant work,

hirelings at a godown waiting to be hired
In the very past, a shepherd with a large flock of sheep would have a hireling to assist him in tending the sheep.
Being a hireling, Jack doesn’t have to be at the job every day… he works when he needs money but works in his own garden most of the time.
We need a couple of hirelings to arrange chairs and tables in the conference hall at the club this week as we have some unexpected foreign guests.
