The correct sentence would be "employed at." For example, "She is employed at the bank."
View page
The prefix of "employed" is "em-".
View page
if you are talking about your boss specifically or if you are
working with a sole employer you say employed by. If you are
talking about a business as a whole you say employed at.
View page
25 percent are self-employed, about 33 percent are employed by
general building contractors, 20 percent are employed by specialty
trade contractors, and 12 percent are employed in heavy
construction.