"I came back from work later than usual."

Translation: Wróciłem z pracy później niż zwykle.

[edziaw1993]

"Przyszłam" or "Przyszedłem" should be accepted

[Jellei]

True. Added both.

[immerweiter]

Wróciłam o pracy, Is this possible?

[Jellei]

Nope. Whether you meant "o", or "od" (which seems more probable to me), no.