It's all in your employment contract. Almost certainly there are IP clauses and exclusive work clauses. First thing - read your current contract (if you are l

It's all in your employment contract. Almost certainly there are IP clauses and exclusive work clauses. First thing - read your current contract (if you are like most people you will need to ask for a copy as you cannot find the original) it should be fairly clear (even without legal training) what the gist is. It will be one of "we own you and everything you ever think" or "We own your work that we hire you to do" Trust me it's not about company equipment (but not don't do that!) - it's about the knowledge you gained at work being used for something else.