Europa Universalis 3 would be perfect but I'm not sure it's the most fit for a job, I mean, it's not a game you can play in 5 minute bursts. it's a very complex RTS. Still, if you can manage with your job, by all means go for it.
Football Manager 2011 if you like football (or any FM)
You could also try Catan if you're more into a board game that heavily resembles a TBS








