(adj): having services contracted for
(adj): having services engaged for a fee
(adj): prenominal), on the job(predicate) -- (actively engaged in paid work
(adj): put to use
(adj): vs. unexploited) -- (developed or used to greatest advantage
employ
(v): put into service; make work or employ for a particular purpose or for its inherent or natural purpose
(v): engage or hire for work
