If you use their contracts/agreements as the basis for your own, you will be misappropriating (taking without permission) information or material you only had access to as a result of your employment for your own benefit. That is illegal--information and documents you see as part of work should *only* be used for work--and you could be sued by the former employer for compensation.That's the law. Practically, they may not find out or notice, or possibly, if they do notice, care. It is a fact that many people use agreements from company A as the basis for agreements they later create or use for company B. That behavior is technically/legally wrong, but is common.