Precision's General Manager Kevin Majoy said workers for DanCo Builders were at the store demolishing the wall as part of an expansion project.
Authorities said the wall collapsed on one of the workers and he died at the scene. The worker's name is not being released until his family is notified.
Workers with Precision said they heard the wall come down and called 911. The store was not open to the public at the time of the accident.
The Department of Labor is investigating.