Decent pay, medium stress, slowly sinking ship.
Pros
The pay is decent. I'm assigned to a big route and work one day a week or whenever the regular takes vacation/sick days. I make as much in one day as some people make on minimum wage in two or three days. Mail carriers are basically on their own when on the route - no supervisors breathing down your neck.
Cons
Being and RCA is hard on your vehicle. Paint will get scratched, you'll go through brakes and rotors about once a month if you work every day. The company is a slowly sinking ship, reporting enormous revenue losses. It's slowly becoming a package delivery service as opposed to mail. The mail volume has nearly cut in half, while the parcel volume has nearly doubled. You won't get a full-time job until the regular carrier dies or retires, which can take a very long time.