Not necessarily, but if your developers and QA and PM's are all on different schedules, it can lead to some major headaches. I worked at a place where devs wou

Not necessarily, but if your developers and QA and PM's are all on different schedules, it can lead to some major headaches. I worked at a place where devs would regularly come in around noon or later. Code wouldn't get checked in and then the QA people were complaining they couldn't test code and the PM's couldn't tell the "business" stuff was ready to look at. Likewise, if the QA people are coming in late and the dev is waiting for stuff to be checked off so he can tell the PM to send the app for review, it can screw delivery up. Is the work done poorly? No, but there were headaches when everybody was on their own schedules.