Literally nearly all of them. PTO accrual is the most common form of PTO granted; you accrue a certain number of PTO hours for every week you work, and your max

Literally nearly all of them. PTO accrual is the most common form of PTO granted; you accrue a certain number of PTO hours for every week you work, and your maximum PTO per year changes with your tenure, starting at, say, 10 days per year and maxing out at, say, 25 days per year, for example. You can usually also roll them over to the next year up to some amount.