Green’s Dictionary of Slang

jour n.

[abbr.]

a journeyman worker, e.g. a printer, a cabinet-maker; also attrib.

Vade Mecum 27 June 3/1: The jours are in the habit of spouting their work from one week to another [DA].
B.P. Shillaber Mrs. Partington 146: ‘I wouldn’t be so bothered about my meals,’ said a jour printer to a brother typo [DA].
Milwaukee (WI) Daily Sentinel 16 Jan. II 2/7: Where the hundreds of old time-honored ‘jours’ [...] have gone to, no one seems able to determine [DA].