DALLAS, TX - SEPTEMBER 14: Republican presidential candidate Donald Trump speaks during a campaign rally at the American Airlines Center on September 14, 2015 in Dallas, Texas. More than 20,000 tickets have been distributed for the event. (Photo by Tom Pennington/Getty Images)

NFL reporter was fired over a controversial Donald Trump tweet, now he's taking things a step further

He's not going quietly.

A reporter for the New York Post who was dismissed after a tweet criticizing President Trump has fired back.

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He's suing the newspaper.

Burt Hubbuch, the former NFL reporter, filed the lawsuit, according to ProFootballTalk, which said it has obtained a copy of the complaint.

The lawsuit claims The Post violated New York Labor Law that says it's "unlawful for any employer . . . to discharge from employment... an individual... because of... an individual's legal recreational activities outside work hours, off of the employer's premises and without use of the employer's equipment or other property."

Hubbuch says the tweet was on his own time.

Hubbuch originally caused the controversy when he compared the inauguration of Donald Trump to the tragedies of Pearl Harbor and the September 11th attacks.

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Hubbuch later deleted the tweet and apologized, but not before he faced ridicule from fellow users on Twitter. A week later, the Post made the decision to fire Hubbuch.