Depends on where you are. In the EU, parts of contracts that sre against the law, which includes labor without payment, are invalid and you are free to sign it.

Depends on where you are. In the EU, parts of contracts that sre against the law, which includes labor without payment, are invalid and you are free to sign it. In this case, giving up IP you made in your free time requires a new contract, because the law also requires a purchasing contract to have clear parameters https://www.urheberrecht-leipzig.de/urheberrecht-nutzungsrechte-des-arbeitgebers-an-kreativen-leistungen-der-mitarbeiter.html https://www.urheberrecht-leipzig.de/urheberrecht-nutzungsrec...