Fictional, but it captures something about work and life in that unique way that art is supposed to.

One of my favorite scenes:

Peggy: "You never say thank you!" Don: "That's what the money is for!"

It captures a lot of the mismatch in perspective between employer/employee boss/subordinate. You're there to do something for someone who is paying you to do it. That's as far as it goes (despite the constant human pull to perceive it as more).