[JJMcJ]

Often in the first-day paperwork, or in the employee handbook which you don't see until day one, if at all.

In days past, there would sometimes be clauses asserting ownership over all IP for rest of your life, till courts finally declared those too much, since they deprived people of their livelihoods.

Cute factoid: Dr. Seuss (Theodore Geisel) was an advertising copywriter. He went into children's books because that was all that was permitted under his employment contract.