1. Short title This Act may be cited as the Rightsizing the Federal Workforce Through Attrition Act . 2. Federal workforce reductions through attrition (a) Limitation (1) In general The President, acting through the Office of Management and Budget and in consultation with the Office of Personnel Management, shall take appropriate measures to ensure that, effective beginning in fiscal year 2019 and during each fiscal year thereafter, the total number of Federal employees shall not exceed 90 percent of the total number of Federal employees as of September 30, 2018, as determined under subsection (b). (2) Counting rule For purposes of this Act, any determination of the number of employees in an agency shall be expressed on a full-time equivalent basis. (b) Monitoring and notification The Office, in consultation with the Office of Personnel Management— (1) shall continuously monitor all agencies and make a determination, as of September 30, 2018, and the last day of each quarter of each fiscal year beginning thereafter, as to whether the total number of Federal employees exceeds the maximum number allowable under subsection (a)