Dude is a shit human being for caging his dog for those lengths of time. Even if he comes home at lunch and let's the dog out, that's a heinous amount of cage time.

If you feel the need to "crate" your dog. Please DO NOT get a dog. You are a fucking horrible person.

You crate food animals for transport.

You don't lock a trusted friend in a box. You teach them to respect the proper boundary and give them appropriate attention.