Except as provided under paragraph (2),
section 5941 of title 5 shall apply to the Postal Service. Except as provided under paragraph (2), for purposes of section 5941 of that title, the pay of officers and employees of the Postal Service shall be considered to be fixed by statute, and the basic pay of an employee shall be the pay (but not any allowance or benefit) of that officer or employee established in accordance with the provisions of this title.