In-N-Out is banning employees from wearing face masks in certain states.
The rule will not apply in California or Oregon.
According to an internal company memo obtained by Eyewitness News, the company is making the move to enhance customer service by showing employees smiles and other facial features.
The new policy applies to restaurants in Arizona, Colorado, Nevada, Texas and Utah.
The rule takes effect August 14, unless an employee has a medical note exempting them from the new requirement.