A Walmart worker is suing the retail giant for alleged discrimination after she refused to work Sundays so she could go to church.

Cory Chavis, 40, says she was forced to use her vacation days on Sundays for six months until the Rockland County Walmart where she worked finally accommodated her, according to the Manhattan federal court suit.

“Shortly after Chavis received this accommodation, Chavis’ managers began to investigate her in an attempt to find cause to discipline her and terminate her employment,” said the suit, which claims that prior to the dispute, she always received “solid” evaluations.

Walmart did not respond to a request for comment.