The USPS has an astronomical turnover rate, says everything about how they treat new employees. You are warned multiple times during orientation that the "career" employees will treat you like garbage (and they certainly do) and because of their powerful union there is nothing management can do about it. Stay away from this place unless you like miserable people trying to project their misery onto you.
As a Holiday Clerk Assistant, perform basically a majority of work as Postal Service Employee. Work is physically demanding of the body where you are dealing with heavy lifting, pushing, pulling, carrying, etc. of mail or containers. Co-workers and pay is good. Ideal job for younger aged generation. May not be ideal for older ones. Constantly on your feet and moving with alot of walking required. If you desire good pay and have the strength and stamina, this is ideal.