[pre]

I've refused to sign employment contracts which push all "IP" into the employers ownership saying things like "You don't get to own my graphic-novel or my band's songs or whatever just coz you pay me to write some web-app"

I've never had them refuse to amend that clause in the face of that. Maybe it's different outside the UK.

If they did refuse to amend, I'd continue the job hunt basically. I probably don't wanna work for a company that inflexible anyway.

Also, contracting works well for owning your own IP. Contractor clients appreciate you have other clients too and don't usually even try to demand exclusive ownership of the product of your mind.

[bitwize]

I once had an employer try to get me to agree to let them use my name, voice, and likeness for any purpose whatever (including specifically for marketing purposes). I told them I refuse to let them use those things for any purpose outside the company and I got an amended contract that same day.