Members of SAG-AFTRA, the union that represents performers, say they are ready to walk off the job which would mark the first time since 1960 that both writers and actors would be actively on strike.

The looming strike could yield serious economic impacts on Hollywood’s film and television industry.

On Tuesday, SAG-AFTRA announced it had agreed to a last-minute request for federal mediation by the Alliance of Film and Television Producers, the trade union representing studios, but would not waver from striking at 11:59 p.m. Wednesday if no deal was reached.

Actors would be joining WGA writers who have been on the picket lines for more than two months since May 2.

The union previously reached a strike deadline on July 1 before talks were extended, but since then, no deal has been reached.