International Alliance of Theatrical Stage Employees
Representing technical employees for stage and motion pictures, including property technicians, electricians, carpenters, riggers, audio visual technicians, and wardrobe personnel.
Covers the United States, Its Territories and Canada and was originally chartered by the American Federation of Labor as the National Alliance of Theatrical Stage Employes in 1893. The name has evolved over the course of 110 years of geographic and craft expansion as well as technological advancement. The current title, more accurately reflects the full scope of their activities in the entertainment industry.