I'm a construction manager for an oil services company. When im in the UK i work 9ish to 4ish in the office depending on how im feeling and then the rest of the evening covering emails and calls. It's pretty much a 24/7 job which sucks but then at least im not bound to an office desk all day. Plus if i want to work at home i can do and nobody questions me on it. Having said that i travel for 3 weeks a month so if anybody ever tells me i don't work hard enough they can fuck right off. My job enjoyment level is average, no more, no less.