Collocations for agency - noun

official
federal, government, governmental, public, state
regulatory
UN
external, independent, outside
commercial, private
voluntary (esp. BrE), volunteer (esp. AmE)
international, local
adoption, dating, travel
estate (BrE), real estate (AmE)
aid, health, relief, welfare (esp. AmE)
news, press
employment, recruitment (esp. BrE)
temp (esp. AmE), temping (BrE)
She was hired from a temp agency.
I've signed up with a temping agency.

intelligence, law enforcement (esp. AmE), police (esp. AmE)
ad, advertising, marketing
appropriate
Details of the problem will be logged by the Help Desk staff who will then contact the appropriate agency.

through an/the agency
He found a job through an agency.