Women's Advancement takes a multi-pronged approach to closing gender wage gaps that addresses both policy and culture. One of the key parts of the approach is to empower women to advocate for themselves in the job market. To do so, the city of Boston teamed up with American Association of University Women (AAUW) to offer free salary negotiation workshops.
https://www.boston.gov/departments/womens-advancement/aauw-work-smart-boston