The purpose of this legislation, known as the Shutdown Fairness Act, is to ensure that certain federal employees, referred to as "excepted employees," receive their pay and allowances for work performed during periods when the government is not fully funded due to a lapse in appropriations. This situation often arises during government shutdowns when funding is not approved for various agencies. The key provisions of the act include the appropriation of necessary funds to pay excepted employees for their work during these lapses.