It is interesting how workplaces vary so. DD1 worked in one very pleasant place, where everyone got on with their own thing, liaised with the others, helped out others if necessary, and so on. Then Her immediate boss left and was replaced by someone worked by setting one against another, carping about everyone's work, and resenting anyone who had been there a long time. The whole atmosphere changed and most left within six months.
DiL, too, had an excellent immediate boss who arranged with HR for her to leave early on a Friday to be home before sundown and to come in early and leave late other days, to make up the time. As a result, the firm got more, not less, work from DiL, who willingly did more than she was expected to in the supportive atmosphere, and took stuff home too. Boss left and was replaced by someone (less capable!) who wanted to "make her mark" by changing everything, criticising everyone, and having everyone present strictly to the same hours. When DiL politely pointed out her agreed times, she was told "You should change your religion to suit your career!" HR stepped in at this point, with some home truths about managing a team and legalities, but that conscientious employee had already looked for and found other work. Several other people left soon after.