Usually go through an average of 2 helpers before I get one that can work. I won't keep someone that is slow, complains all day, and/or can't follow simple instructions. I won't let them use the helper board, except on rare occasions will I hand them one already in signature mode to grab a signature for me while I sort. I've had some real knuckleheads over the years. Why does UPS even hire overweight people? I get it. Can't be biased, but for the love of Pete they just can't get the job done. I've yet to have an overweight person handle the job for 10+ hours a day every day. There's no excuse for me delivering 3-4 stops while they're still doing one. I also don't get how a guy in his early twenties, in shape, can't keep up with my old ass. My knees are shot, and I do this job year in, year out, and these kids cry as soon as the first hour passes. "When are we eating? When are we taking a break? How long till we're done? Is it like this every day? When do I get paid? Do we work in the rain? Do I have to carry that heavy (40 lb) box by myself?" Some days I just wanna cram a tampon in their mouths to stop the heavy flow. I did have one guy for 3 straight years that was great. He was on time every day. Never complained about anything, rain, shine, cold or blown-out. Could also keep a conversation going without using the word "like" to connect his sentences. "Are we getting done, like, soon, or like, later? You know, like, will I be paid on Thursday, or like Friday". ugh. This year I have a former Pre-loader. He worked for 6 years until he left the company for another job that fell through. He's always on time, and never complains. Is he quick? Nope, and I have to literally point to every door and wait until he starts in the right direction, but at least he's dependable. I take that over fat, stupid, and complaining any day.
Good luck with your helpers. Soon as it rains you'll know if they're a keeper or not, or if they're suddenly "ill".