SAG actors are striking but there are still projects they can work on. Here are the rules of the strike.

Hollywood actors joined writers on strike earlier this month after negotiations between their union, the Screen Actors Guild-American Federation of Television and Radio Artists, and major studios hit a wall. 

The union, commonly called SAG-AFTRA, has more than 160,000 members, but the strike only affects the 65,000 actors in the union. The actors overwhelmingly voted to authorize the strike, which has halted most film and TV production. Here are the rules of the strike.

"All covered services and performing work under the tv/theatrical contracts must be withheld," SAG-AFTRA told members in a letter on July 13. This includes on-camera work like singing, acting, dancing, stunts, piloting on-camera aircraft, puppeteering and performance capture or motion capture work. It also affects off-camera work like narration or voice-overs, background work and even auditioning.