seriously people who do this need to stop. Do your 8 and your 40 but no more. I mean if you are being paid a premium which would be at least 200k in the us. Then fine do the bit extra but honestly most jobs asking for that are not giving enough. You should as a single income have zero worries about paying bills and have a good amount of disposable income to make it easier to enjoy the time you do have in that situation.