Also, push back against the (sadly common) contract clause that says they own all of your IP, regardless of whether it is associated with your job or not. I once turned down a temp position because the contract said they owned any IP I created *while commuting.* I asked if they were going to pay me for my commute them, then...

This is something the creative industry deals with.

If you create IP for your employer they own it. Many companies try to say they own everything you create, including your blog, the novel you are working on in your own time, etc. Yes, companies have tried this.