Green’s Dictionary of Slang

1. to finish.

1838		W.N. Glascock Land Sharks and Sea Gulls II 124: When the job’s jobbed, he may be drunk for a month o’ Sundays if he likes.
1965		F.J. Hardy Yarns of Billy Borker 23: Within a week, he jobbed the panno, snatched his time and bought an air ticket to gay Paree.

2. (US) to fire from a job.

1982

(con. 1971) J. Ehrlichman Witness to Power 306: Haig was furious and had accused Young and me of ‘jobbing a fine military officer’ on ‘nothing but flimsy circumstantial evidence’.