Green’s Dictionary of Slang

1. (Aus.) an argument, a dispute, a refusal to cooperate, esp. at work or in the office.

1948		S.L. Elliott Rusty Bugles II ii: By gee, they’ll have a ruddy jack-up here in the Transport Section if they don’t.
1951		(con. 1941) E. Lambert Twenty Thousand Thieves 156: Groggy can’t ignore two jack-ups, whatever the reason.
1953		T.A.G. Hungerford Riverslake 163: I seen the day when there would’ve been a jack-up over it.
1984		B. Ellem Doing Time 191: jack-up: a protest or strike.

2. (Aus./N.Z.) a ‘frame-up’, an act of calculated deception.

1988		McGill Dict. of Kiwi Sl. 62/1: jack up to be framed or put in trouble or deceived; from double-headed penny known as a ‘jack’ in the game of two-up; eg ‘It’s pretty obvious it’s a jack up between the two leaders.’.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].