Seems like a bad idea to me. There are many people (myself included) who forget to take vacation time or never feel like it's a good time to take it. Short term

Seems like a bad idea to me. There are many people (myself included) who forget to take vacation time or never feel like it's a good time to take it. Short term, that's probably good for the company, but it can lead to burnout. Good managers insist that people use their PTO if only to keep highly valued people from suddenly snapping under their workload. There are, on the other hand, people who jealously guard their time off. Giving them unlimited time just sets them up for conflicts with management because there is no pre-agreed upon notion of what is fair.