Two unions representing Boston Globe workers say they've reached agreements on concessions with management as negotiations with the newspaper's largest union continue.

Mary White, president of Teamsters Local 1, which represents 245 mailers, says a tentative agreement was reached at around 4:30 a.m. Monday. It includes $5 million in concessions and changes in lifetime job guarantees. In a report on the Globe's Web site, White says the concessions were "necessary in closing the deal."

A union representing 210 delivery drivers also reached agreement Monday. Official Ralph Giallanella says the union agreed to about $2.5 million in concessions.

The New York Times Co., the Globe's owner, has said it will shut the paper unless it gets $20 million in concessions.