A Wal-Mart employee was fired after he helped a woman being assaulted in the parking lot of one of the retail giant's branch in Michigan, reported WXYZ-TV.

It was around 2:30 a.m. when Kristopher Oswald, Wal-Mart's employee, heard a woman screaming during his lunch break on the overnight shift.

"I was inside my car when I heard the woman and spotted a man hanging onto the hood of her car," he told WXYZ-TV. "At first, I wondered if it was just people horsing around recklessly, but when I got closer to see if she was in danger, the man began to attack me punching me in the head."

When he started to fight back and thought he had the man over control, two Livingston County Sherrif deputies stopped him holding him from behind.

According to Kristopher, the store's management was dismissing him because he violated Wal-Mart's policy by helping the women during his lunch break.

"After a violation of company policy on his lunch break, it was determined to end his temporary assignment," reads on the termination papers Wal-Mart gave to him.

Wal-Mart has a policy that doesn't allow workplace violence in order to prevent employees from attacking a co-worker or tackling a shoplifter, Kristohper added.