Gathering here for the A.F.L.-C.I.O.’s winter meeting, union leaders on Tuesday called on Mr. Obama to immediately nominate a slate of five members to fill all of the board’s seats.
Labor leaders asserted that the court ruling could badly undercut unions because a paralyzed N.L.R.B. would not be able to intervene if employers engaged in unlawful tactics during unionization drives, including illegally firing union supporters or intimidating workers into voting against having a union.
Larry Cohen, president of the Communications Workers of America and chairman of the A.F.L.-C.I.O.’s organizing committee, said in a news briefing that Senate Democrats had various options on how to get those nominees approved and “we expect you to use all the options.”
Mr. Cohen warned that if Senate Republicans filibustered to block the nominations and Senate Democrats did not then adopt tougher rules to overcome filibusters, “we will mobilize and take action against the Senate Democrats like we never have before.”
“We will be mobilizing across the country in every state in every one of their offices,” he added.