"People didn’t even want that much more time off, or that much more time not on call. They just wanted to know where they stood. They didn’t want to have to engage in highly personalized bargaining all the time. It wasn’t that there were rules that favored management — there were simply no rules, and this ambiguity worked in management’s favor."
https://www.jacobinmag.com/2018/04/lanetix-tech-workers-unio...