Easy, 9-5 is when you have a job in the HR department of a small firm based in Wakefield or somewhere similar. The kind of job where, when the clock hits 5.00 exactly, you can drop everything, walk out the office, and totally forget about work until 9.00am the next working day.Sadly, most jobs in London require that you wake up at 1am each night in a cold sweat thinking about what's going to happen during your next appraisal. And we're all too anxious about keeping our jobs to risk it all by leaving the office at 5pm. After all, if you leave at 5pm you're not a team player and/or you don't work hard, right? And how are you going to pay that £300K mortgage on your 2 bed flat in Southwark if you lose your job?I think you'll find that the business models of firms which work their staff 70+ hours per week are pretty much the same as those that work their staff 35 hours per week. The difference is that the company owners go home twice as rich at the end of the year. As for the staff...? Well, 98% of them just burn out and eventually relocate to Wakefield or similar. A far cry from the vision of wealth and affluence they were promised when they graduated.