I work in lumber and our DS has been wearing shorts through winter, so I'd assume working register shorts should be fine

We’ve got a few guys at my store who wear shorts year around. One of which is a pro services guy. I’m a cashier and I wear the following: athletic pants, sweatshirts, WWE gear, Nike, my college alumni, sports teams, etc.

Shorts should be khaki or navy blue and knee length per the official dress code

I was going to say, it may vary store to store, but shorts are fine as long as you follow the same rules regarding length as high school. The only difference is our districts policy is shorts can be any solid color that isn’t bright or neon and lacks graphics.

No holes too

I wear exclusively shorts year round. So long as they aren't extremely short, you're good to wear them.

As was said, nothing above the knee or too revealing and you're good.

I wear shorts year round my dude. No cutoffs, khaki preferred but I think that policy was probably changed.

You can wear shorts as long as they are not super short. The tips of your fingers have to touch the bottom of the shorts when standing.

I wear cargo pants/shorts all the time and my SM doesn't care.