Former Boston Mayor Marty Walsh could soon be due for his second U.S. Senate confirmation hearing.

President Joe Biden on Thursday nominated Walsh, a lifelong Dorchester resident who spent more than two years as labor secretary in his Cabinet, for a position on the U.S. Postal Service's Board of Governors.

The board effectively oversees operations of the Postal Service, and it describes itself as "comparable to a board of directors of a publicly held corporation." It can have up to nine governors, and according to USPS, seven of those seats are currently filled.

This is the second time Biden has nominated Walsh for a major federal job. In January 2021, the president tapped Walsh to serve as his secretary of labor. Walsh won Senate confirmation in March of that year, and remained in office until February 2023, when he departed to take over the NHL Players' Association.

It was not immediately clear Thursday if Walsh would need to depart his job leading the NHL players' union to take the USPS board position.

Walsh, a longtime labor leader, spent seven years as mayor of Boston. Before that, he served 16 years in the Massachusetts House of Representatives.