It increases anxiety and stress, which probably decreases productivity to a much greater degree than whatever benefits you'd get from time tracking. I suspect

It increases anxiety and stress, which probably decreases productivity to a much greater degree than whatever benefits you'd get from time tracking. I suspect the number one factor to a successful project is a happy, healthy team. I'm pretty sure there's a section in Peopleware that backs that up. I'd be really careful with any approaches that risk losing that dynamic (or preventing it from forming).