 Mary served as a member of the leadership team for Assembly Speaker John Pérez, Assembly Speaker Karen Bass and Assembly Speaker Fabian Nunez, serving as Chair of the Assembly Committee on Business, Professions and Consumer Protection.Previously, Mary Hayashi served as a member of the California Board of Registered Nursing and Commissioner on the California Mental Health Services Oversight and Accountability Commission, which was created to monitor the implementation of California Proposition 63 (2004).Mary Hayashi ran unsuccessfully for California State Senate in 2014 finishing third place in the race.