If one receives a job offer, should the vacation time be explicitly stated and exact? I received one such for an early employee for a very small and new startup, where the offer received mentioned "participation in company vacation plan when established". The general informal vacation policy currently seems to be take what you need within-reason, get your work done, etc. People just post it to a calendar, etc.
The informality is not a big deal, and I do not expect needing extensive vacation. However, I'd be more worried about not taking any, leaving the company potentially, and them not needing to pay out any unused vacation time because it wasn't stated.
Should I push for exact vacation numbers even before they've established the policy? The pros would be payout-requirements, and firmness, the cons might be less stated time than the informal policy allows for.