Nearly 8,000 employees of the 28 Superstore locations in Alberta walked off the job at midnight, Sunday morning.

According to the union representing the workers, UFCW Local 401, contract talks between Loblaws, Superstore’s parent company, and the employees have become stagnant, with the two sides far apart on many key issues. Negotiations began in January of this year.

Union officials say Loblaws is out of touch with Alberta’s booming economy and the company needs to adapt to remain competitive and maintain quality and safety levels.

Superstore locations throughout the province will remain open throughout the strike but with reduced store hours and limited service being provided in departments including deli, seafood, and electronics. Management will be filling employee roles during the job action.