N.Y. Gen. Bus. Law § 1011
The commission may issue temporary working permits to professionals, their managers, trainers and seconds. A temporary working permit shall authorize the employment of the holder of such permit to engage in a single authorized professional combative sport at a specified time and place. The commission may require that professionals applying for temporary working permits undergo a physical examination and neurological test or procedure, including magnetic resonance imaging or medically equivalent procedure. Temporary working permits shall expire upon the completion of the single authorized professional combative sport and any subsequent evaluations or inspections required by the commission. The fee for such temporary working permit shall be established by the commission pursuant to rule.
N.Y. Gen. Bus. Law § 1011