OK, I'll give an example. My team leader in a previous job used to regularly turn up at 11am (officially we were supposed to be in by 9.30, but it was academia

OK, I'll give an example. My team leader in a previous job used to regularly turn up at 11am (officially we were supposed to be in by 9.30, but it was academia and no one complained too much). I was usually in before 9.15 - like the majority of the staff. So sometimes I would need to ask him something, and he wasn't around - that would hold me up. Sometimes other people would need to ask him something. He wasn't around, so they asked me instead - usually when I was trying to get in the zone. I am all for giving staff flexibility but it should not come at an expense to productivity.