I co-owned and worked at a small business and we tried unlimited PTO.

We had to add a two-week minimum clause because some people weren’t even taking that.

As an employee, I came to prefer a fixed amount that expired because it felt like it should all be used.

With unlimited, it seems some people who felt guilty or loyal or “busy” would take less while others who felt entitled would take more.

Many people use as many as you give them. If you don’t give them a number, they only use what they need.