Senior Executive Service Diversity Assurance Act

Senior Executive Service Diversity Assurance Act - Requires the Director of the Office of Personnel Management (OPM) to establish within OPM the Senior Executive Service Resource Office to make recommendations to the Director with respect to regulations, and to provide guidance to agencies, concerning the structure, management, and diverse composition of the Senior Executive Service (SES). Makes it the Office's mission to: (1) improve the efficiency, effectiveness, and productivity of the SES through policy formulation and oversight; (2) advance the professionalism of the SES; and (3) ensure that, in seeking to achieve an SES reflective of the nation's diversity, recruitment is from qualified individuals from appropriate sources. Requires the Office to make statistics concerning career reserved positions accessible to the public through the official public website of OPM. Revises the career appointments recruiting process to require agency heads to ensure diversity of executive resources boards, and any subgroup or other evaluation panel related to the merit staffing process for career appointees, by including members of racial and ethnic minority groups, women, and individuals with disabilities. Requires the Director to promulgate necessary regulations and report to Congress on agency efforts to improve diversity in executive resources boards and of qualifications review boards, based on the collection of statistics concerning race, ethnicity, sex, and disability required by this Act. Requires each agency, within one year after enactment of this Act, to submit to OPM a plan to enhance and maximize opportunities for the advancement and appointment of minorities, women, and individuals with disabilities in the agency to the SES. Requires the plans to: (1) address how the agency is identifying and eliminating barriers that impair the ability of such employees to obtain appointments and any actions the agency is taking to provide advancement opportunities; and (2) be updated at least biennially. Requires the Director to report to Congress on plans and updates.