If you ever hear the phrase "you need to be flexible", run like the wind. They mean "you need to be willing to break the rules if it's expedient because we surely will ask it sooner or later". Do not expect said flexibility to work in the other direction when it comes to needing a day off at short notice. Likewise, "you need to go the extra mile" means "you need to be prepared to do other duties for no pay and/or without including it in your FD return". In either case you can be sure that if you get caught by an Inspector, they'll throw their hands up, issue a memo expressing their horror and disappointment that anyone could engage in such folly, and hand the Inspector the toasting fork. Two weeks later, you'll need to be flexible and go the extra mile again.