Starting before a specific date, perhaps July 1 or October 1, may earn you credit for a full year's employment in determining vacation. And leaving your old firm a few days later than planned may mean an extra week of vacation pay. An office with a window. Some benefits reflect a company's ethic. If offices are meticulously rationed by seniority or status, it will be hard to get one out of the mold.
New ones are a hidden pay boost.
That's not bad, if your family schedule can accommodate it and you thrive in that kind of atmosphere. Losing family or other time is a backdoor reduction in compensation for the working hours you put in, so if that happens you need to make sure you're recompensed in some other way. You want to fit in at a new firm at least as well as you did at the old place, or perhaps a lot better. And that means judging issues of lifestyle and corporate culture. Job counselors recommend sounding out peers at any potential employer.