Really a union fought for my unlimited vacation? I'm not being facetious but this perk is something that IME is unique (or at least originated in) silicon valley startups. Unions fought for more vacation but empirically speaking the free market led to even more.

And before we have the detractors of unlimited vacation coming in. Several of my colleagues take month long vacations, some multiple times a year, withiut reproach. It is objectively superior to my mother's union job