Seizing on a historic moment for women challenging discrimination in the workplace, Washington state’s legislature passed the Equal Pay Opportunity Act on Wednesday. The bill passed both chambers on the eve of International Women’s Day.

The bill updates Washington’s existing gender pay law for the first time since it was enacted in 1943. It forbids employers from instituting policies that don’t allow workers to discuss their salaries with one another. The new bill also requires employers to provide the same career advancement opportunities to all employees in comparable positions, regardless of gender.

Washington state Rep. Tana Senn sponsored the bill and worked on its language with the technology industry. She lauded support from the Washington Technology Industry Association, Moz CEO Sara Bird, and others. Senn said Microsoft had some reservations about the section of the bill pertaining to career advancement opportunities, but the company was “very actively engaged in working with us on language around that and we got to a great place.”

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