Top Definition
A factory where a Union House holds sway; despite the faux friendliness of the people, if you aren't in their Union (as in a temp worker), they will ultimately stab you in the back versus having your back.
When you are not being assigned any actual work, shunned at break time and have everything you say repeated to everyone else on the floor, you are probably working in a Union Shitbox. Beware!
by CryHavoc June 09, 2014

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