The largest union representing U.S. railway workers voted against a tentative agreement with major rail carriers. This rekindled the possibility of a national strike.

With the assistance of the Biden Administration has been trying to prevent a shutdown of work heading into the holidays. Many workers claim that the deal doesn’t adequately address their concerns, particularly in respect to sick leave.

Jeremy Ferguson, President of the Transportation Division of International Association of Sheet Metal, Air RailTransportation WorkersThe largest union in the contract is, and it said that the members had rejected the five-year agreement.

“It’s now back to the bargaining table,” Ferguson stated this in a statement.

Members of the second largest union were involved. The deal was approved by the Brotherhood of Locomotive Engineers and Trainmen. However, any strike by any worker would be likely to be accepted by other unions and could have a negative impact on the whole system.

This is still a developing story. Keep checking back for more updates.