Expect no support from management (my experience). You will always be on call, so make no personal plans. You must work 90 physical days (not three months total) - 90 days actually worked before you can even apply for a full time position anywhere else in the USPS. If you are an RCA, that is a one day a week relief carrier, you would have to work at least 22.5 months before you can even apply for a full time post. As an RCA you must buy your own vehicle to deliver in and pay for your own gas, tires & repairs. You do get a mileage per diem based on the miles of your route, which is good, but it will never fully reimburse you for the cost of your vehicle, new brakes every three months, replacement tires every 6 months and all of the oil changes and other services your vehicle will require, not to mention insurance. If you can get on as a city carrier's assistant, at least most post offices will provide a vehicle and the gas. You also have to keep very accurate records of your hours worked and mileage, as I was warned by seasoned carriers when I started. I was shorted 20 hours during the Christmas rush and the post master told me it would take 4 to 6 months to get paid on these because of all the paperwork. Turned out, he just did not want to do the paperwork and pay the fine for screwing up my payroll. I had to quit my job and file a grievance with the union to get paid.
no healthcare, always on call, hard to get paid