Here, it is grounds for losing your license if you "rent it" to someone else. The only way to do it is if YOU work for the person/company and they register you as the "qualifying party", and YOU assume responsibility for any, and all, problems which should occur. Weekends are "expensive" time for customers so I would not hire someone just so he could increase his income. And I would NEVER certify the work of anyone other than an employee, (if for no other reason that he is a competitor possibly infringing on my customers and/or cutting the prices of legitimate contractors), because that would open me up to insurance liability if he were to burn a house down, or have any other claims.