List the name of the production company and the name of the extra. This establishes who is the employer, the production company, and who is the employee, the actor. Note that the name of the production company is not always the name of the movie, television show or commercial. Because in the case of a legal dispute the employer cannot be a product. For example, if you are working on a movie called "Robots in the City" from the production company Robot Parts, Robot Parts would be listed as the name of the employer.
State the date the extra will work and compensation he will receive. This amount can be a flat rate for the day, or payment per hour. Note: you must check with your state film commission and labor department to make sure you are paying at least minimum wage. Additionally, depending on state law, you may have to pay the extra overtime at a rate of time and a half or double time if he works passed a certain number of hours. Finally, the state labor board may require a meal break after so many hours of work.
Add language that gives you worldwide usage rights across every platform in return for the wage the extra receives. List the specific places where the content might appear including but not limited to online, television, movies, mobile devices, and streamed content websites. The language should also give you, as the producer, the right to use the artist's name, likeness and voice to promote the content in anyway shape or form.
Include a paragraph that makes it clear the performer will not receive additional compensation in the future. One of the major ways an actor is paid is through residuals. Extras are not entitled to residuals under the union contracts. Build this same protection into your contract so that the extra does not seek additional compensation down the line.
Include language specific to your production. For example, if you are compensating the extra for a costume he is bringing from home, or you are giving him a meal stipend, this should be spelled out in detail.
Place an area where the contract is signed and dated by a representative of the production company and the actor. This area should reiterate that both parties agree to the terms listed listed above.