And if you have unlimited days off, and your superior refuses to give you a day off and you take it anyway, the same thing happens. And in some company cultures, just asking for vacation gives you a bad rep, because you're not dedicated enough to the company.
The solution at my office has just become that nobody asks anymore. Who wants to be the first to stick out their neck?
Unlimited vacation doesn't work. Where I work, all it resulted in was our project manager taking a week off at the same time that us developers were pulling 10pm nights and coming in on that weekend to get a feature done that he had promised an unrealistic deadline for. God help us if one of the people who actually builds things had wanted a vacation during crunch time. In 14 months of working there full time, I've managed to take 6 vacation days, and that's more than what most of the dev team got.
Then again, that's what you sign up for when you work for a startup with a culture that values time at work above pretty much everything else. The only dev who got a real promotion in that time was the guy who pulls 10 or 11-hour days every day, to prove his 'dedication' to the company. And no, he hasn't taken any vacation either.
The solution at my office has just become that nobody asks anymore. Who wants to be the first to stick out their neck?