I think I got lucky as far as working hours went. I was in an account and with a client that didn't seem to care so much. Even at that client, some Accenture teams worked long hours, but the teams where I spent a lot of time were never the 12-hours-a-day workaholic types. I'd say that for 98+% of my time at Accenture, I arrived at work around 9am and left work around 6pm, with a decent lunch break in the middle (30-60 minutes).