The New York Times reported that rail workers’ unions felt betrayed by President Biden’s support of legislation that imposed a settlement and averted a national strike.

This is the same president that Trumpers call a “radical,” a “socialist,” and a”communist.”

The agreement Mr. Biden asked Congress to impose would raise pay nearly 25 percent between 2020, when the last contract expired, and 2024, and allow employees to miss work for routine medical appointments three times per year without risking disciplinary action. It would also grant them one additional day of paid personal leave.

It would not provide paid sick leave, however, a provision that many workers argue is the bare minimum they can accept given their grueling work schedules, which often leave them on the road or on call for long stretches of time. Rail carriers say workers can attend to illnesses or medical appointments using paid vacation.

Four of the 12 unions that would be covered by the agreement voted it down, and several others approved it only narrowly.

Tony Cardwell, the president of the Brotherhood of Maintenance of Way Employes Division — International Brotherhood of Teamsters, which voted down the agreement Mr. Biden has asked Congress to impose, said that simply asking Congress to include paid sick days in the agreement would have gone a long way toward satisfying his members.

“If he would have said, ‘I want this one thing,’ it would have changed the whole narrative,” Mr. Cardwell said in an interview on Wednesday.

House Speaker Nancy Pelosi told members on Tuesday night that she would hold a vote on a separate bill that included seven paid sick days, but it was unclear whether it could pass both houses of Congress.