This subthread started with CronoDAS pointing out that it's hard to change the amount of money you earn by changing the amount of hours you work, and CoffeeStain pointing out that even if you can't do so in the short run you still can in the long run, because the more you work the more likely you are to be promoted. So, if we talk about the people who can just decide to work more hours this month to earn more money this month, we've come full circle here.