Billionaire fired me over 1 sick day: suit

That’s just sick! A billionaire hedge-fund mogul treated his dog walker worse than a stray mongrel — cruelly firing the man for taking a single sick day after a year and a half of employment, a new Manhattan federal lawsuit claims.

Juan Gonzalez — who also served as chauffeur — says Nelson Peltz and his model third wife, Claudia Heffner Peltz, fired him after he was forced to seek emergency medical help for shortness of breath and diabetes complications and was unable to come to work.

Gonzalez, 57, said he toiled tirelessly for the Peltz family, including driving them “to social events and shopping, walking their dogs and checking the dogs for ticks,” the suit says.

Gonzalez knew, however, that the Peltzes had a reputation for being tough on staff, so he never took a vacation day or a sick day during the roughly 19 months he worked for the them, his lawyer said.

“Every time they needed me, I was always there,” Gonzalez told The Post. “I was loyal, and I thought the Peltzes would be the same back.”

In July 2016, he started feeling ill from his diabetes and visited an emergency walk-in clinic, he said.

When his supervisor at the couple’s Mt. Kisco estate found out that he was going to be taking a sick day, he called Gonzalez at the clinic and started chewing him out, the suit claims. It got so heated, a nurse got on the line and tried to help, the suit says.

“He’s diabetic and his [bloodsugar level] reading is over 300 [mg/dl],” nurse Romilda Canale allegedly told Peltz’s property manager Ken Schwebel. “You cannot force this man to go to work.”

Schwebel’s responded, “Juan, if you don’t show up, then don’t come back, because you need to take the family out on a run,’’ the suit said.

Gonzalez was fired hours later, his lawyer said. Gonzalez says he was disappointed not to personally hear from the Peltzes after a year-and-a-half of loyalty.

“No one contacted me after I was fired,” he said. “They just didn’t care.”

It’s not the first time the Peltzes — whose Westchester County estate boasts a private hockey rink and pool — have been called out for allegedly harsh treatment of their staff.

In 2009, the now-defunct Web site Gawker wrote a series of “House of Horrors” stories claiming that the Peltzes were notorious for firing staff for no apparent reason.

Neither Peltz nor his hedgefund firm, Trian, which was also sued, returned a request for comment.

Every time they neededn me, I was always there. I was loyal, and I thought the Peltzes would be the same. — Dog walker Juan Gonzalez (left), on his boss, Nelson Peltz