The way I've structured options agreements is that if someone is let go without cause, they get their prorated shares that will vest next. So half way through t

The way I've structured options agreements is that if someone is let go without cause, they get their prorated shares that will vest next. So half way through the year on a one year vest? Give them half the shares. If we fired with cause (which usually requires somewhat egregious behavior and isn't just an employee not working out), then they did not get anything prorated. If they quit, generally we'd also prorate unless they leave us in a lurch. It was setup this way contractually for us, but you could certainly choose to do it this way willingly without the contractual obligation.