The Greater Washington Central Labor Council, a group of about 150 unions in the District of Columbia, announced its endorsement yesterday of Statehood Party candidate Hilda Mason in the July 19 special D.C. City Council election.

Robert Petersen, president of the Labor Council, said the group will ask affiliate unions actively to support Mason. Each union member will be asked to contribute $1 to Mason's campaign, Petersen said. He estimated that of the unions affiliated with the Council, from 70,000 to 80,000 of their members are District members are District residents.

"In the past, we've been able to get about half the members to contribute to campaigns," Petersen said.

Petersen said Mason was chosen after interviews with several of the candidates, and that she "clearly has the experience to represent the interest and concern of the workers in the city."

The Labor Council has backed Mason in her previous school board campaigns, and she said yesterday she is "hopeful" that the Council's endorsement would "get people to the polls and bring money into the campaign."

Mason is one of 10 candidates seeking election to the at-large City Council seat left vacant by the death of Julius Hobson.