People don't always have to be improving themselves at work. At a certain level of skill (say average), just doing your job is enough. Now sure, if you want t

People don't always have to be improving themselves at work. At a certain level of skill (say average), just doing your job is enough. Now sure, if you want to get ahead at work, then it's a good idea to go the extra mile, but not everyone cares about that or needs to care about that. They have other aspects of their life that they want to focus on at the expense of their work life.