Have you recently been offered a job? Are you still on the search for the right opportunity? Whether you're already considering an offer or still looking, you need to exercise some serious caution before you sign any sort of employment contract. Otherwise, you might find yourself subject to clauses that restrict your life and career even after you move on to bigger and better things with another company sometime in the future.
When you sell stock photography, there is always a risk that someone may use your image in a way that you didn't permit in the licensing agreement. When that happens, you need to protect your licensing rights. The best way to do that is to work with a copyright and licensing attorney. I've spent a lot of time researching fair use and licensing restrictions. I hope that the information here helps you to not only understand your rights as the creator but also to learn how to document and enforce those rights and seek legal resolutions when they are violated.