This is how I see it. And of course its just my opinion. There are real reasons to call off. If you are projectile vomiting and projectile other things, you should call off.
If the weather sucks, you should go to work, but if its snow up to your earballs, I think the seniority drivers should get first dibs if someone goes home, but in my experience, the veterans come in, the newbies cant get out of their driveways.
I think it is called work ethic, which I have, and proudly admit. And I had it before I was an employee here. I worked a full day when I fell back in the 90s on ice. When injuries werent what they are now. It hurt bad, but I worked through it. Ended up having a broken ankle and broken coccyx: laymans terms tailbone. I thought it just was sore.
If your child has to go to a pediatrician for a shot or a cold, you should not call off. Unless you are a single parent, then if you have no help, you should call off, family first. If your child has a serious illness, you should call off.
If your wife has to go for a ob/gyn appt, you do not need to go. Go to work. If your husband has a prostrate exam, you should go to work. Hes a big boy, he will be fine. If your wife or husband has cancer, you should call off, go with them.
If your knee/shoulder/butt hurts, you should go to work. Usually if it is soreness laying around the crib makes it worse.
Our company is what it is because employees take it seriously, it is an important job. Yes UPS will survive if you are not there, but your job cannot be done by a monkey, unless the monkey has some training. There are only so many people on the roster. Dont be the one everyone hates because you are a wimp and dont belong in our circle!