Betty de Losada, who in the course of a long career had been everything from a union officer to an advocate for the preservation of San Francisco landmarks to a public relations consultant, died Dec. 10 at St. Luke’s Hospital in San Francisco of complications of cancer. She was 89.
[She] worked in the warehouse industry and became a leader in Local 6 of the International Longshore and Warehouse Union. In an oral history, she described how she helped negotiate a pioneering agreement providing maternity leave for female workers, served on the union negotiating committee, and was chair of the strike committee during a big strike in 1949.