His laborer dad was horrifically buried alive digging a cesspool — and now the son is suing for $50 million plus pain and suffering.

“How could this happen to my dad, and now another father?” son Michael Sinnott said of Don Antorino Sewer & Drain of Greenlawn, N.Y., which remains in business despite three Long Island cesspool-dig collapses.

Antorino employee Edward Sinnott, 59, was the first of two laborers to die while working for the company, says family lawyer Susan Karten.

In May, 2017, Sinnott was sucked down 30 feet into a collapsing sewer trench in Huntington; seven months later, another of the company’s workers died under similar circumstances in nearby Shoreham, Karten said.

In both instances, the excavation site lacked proper bracing, and workers did not wear protective harnesses, she said.

The federal Occupational Safety and Health Administration has fined the Antorino companies tens of thousands of dollars in those collapses; a third worker was buried up to his torso in a collapse more than ten years ago at another Antorino work site in Roslyn, NY, she said.

As the tons of dirt caved in around him, Sinnott experienced “agonizing suffocation and pain and suffering from being buried alive,” according to the family lawsuit, filed in Suffolk County Supreme Court.

Calls to defendant contractors Barton Pember and Don Antorino were not returned Thursday.