If you don't already know what your would-be partner does for a living, it's probably one of the first things you're interested in finding out. After all, a person's job says a lot -- is he financially stable? Is she creative or structured? Does your date even have a job? But rather than just simply asking where your companion spends the largest part of the day, why not dig a little deeper? Asking about a job's best aspects sets a positive tone and steers the career question away from negativity and spontaneous rantings about a horrible boss.
Plus, it's a good question to ask if they've already told you where they work but you can't quite remember.