My solution to this is to have a fixed vacation time (like most companies), but the following years vacation time is docked by the amount you didn’t take, creat

My solution to this is to have a fixed vacation time (like most companies), but the following years vacation time is docked by the amount you didn’t take, creating a strong incentive and justification to take all of your vacation each year. On top of that, a randomly selected day or week per year as mandatory vacation (to build team resilience since any person might not be available).