United States labor secretary Marty Walsh has told Major League Baseball he's willing to get involved in collective bargaining negotiations.

It's unclear if the league and the union will take him up on his offer.

"I have spoken to both the MLBPA and MLB about the ongoing contract negotiations and encourage both sides to continue engagement," a spokesperson for Walsh said. "Like any contract negotiation in any industry, I stand ready to help facilitate productive conversations that result in the best outcome for workers and employers."

Late last week, the owners submitted a request for assistance from the Federal Mediation and Conciliation Service, but the union declined.