A couple thoughts from flex-time policies I've had in the past: Is there actual flexibility? Will it be effectively defeated by mandatory meetings outside of core hours? Will it apply as well to things like an early morning/late afternoon doctor appointment? I say these because I dealt with those issues at prior jobs, mostly at a well known US public university IT division. The "core hours" were 9-3, which meant our choice was to work 7-3, 8-4, or 9-5. For a time there was a mandatory 5-6 P.M. daily status meeting (nicknamed "detention" due to it being a school) for which they required we be in-person, thus all of us who had to be in that refused to arrive before 9. Also they were very strict that if an appointment required being in at all after 9 or leaving before 3, even by a few minutes, we had to use sick time. Through all of this I note that most of us in the division were salaried and exempt. I did, ultimately, work 7-3 for a few reasons. My commute was far less time; rather than catching every light red at least once on the commute route and many 2-3 times I at most caught 25% of them red and was often the only vehicle at the light in that direction at 6:30. Further, the division had a serious problem with projects that sat in someone's inbox all day and became an emergency, "must be completed before the next business day so cancel your evening plans" at 4 P.M. and were typically dumped on me as the least-senior person but I was no longer in the office to be assigned them when they arrived. If such an issue is present in your workplace flex time may create additional issues (if it's present there is already a problem.)