The country's third-largest freight rail workers union rejected a temporary agreement brokered by the Biden administration to avert a potentially crippling nationwide railroad strike, raising the possibility that one could occur next month.Some of the provisions would allow workers to avoid attendance penalties for routine medical visits and hospitalizations, and the proposal included the biggest wage increases in more than four decades.However, the deal did not address the number of unpaid sick days for which workers would now be eligible, among other issues that were left to be negotiated in the future.In a brief statement, the National Carriers’ Conference Committee, which represents the country’s freight railroads in national collective bargaining negotiations, said it was "disappointed" with the decision.The Associated Press reported that the union will delay any strike until five days after Congress reconvenes in mid-November to allow time for additional negotiations."