of certain terms The definitions in section 101 shall apply, except as follows: (A) Eligible employee In lieu of the definition in sections 101(2)(A) and 101(2)(B)(ii), the term eligible employee means an employee who has been employed for at least 30 calendar days by the employer with respect to whom leave is requested under section 102(a)(1)(F). (B) Employer threshold Section 101(4)(A)(i) shall be applied by substituting fewer than 500 employees for 50 or more employees for each working day during each of 20 or more calendar workweeks in the current or preceding calendar year . (2) Additional definitions In addition to the definitions described in paragraph (1), the following definitions shall apply with respect to leave under section 102(a)(1)(F): (A) Qualifying need related to a public health emergency The term qualifying need related to a public health emergency , with respect to leave, means the employee is unable to work (or telework) due to a need for leave to care for the son or daughter under 18 years of age of such employee if the school or place of care has been closed, or the child care provider of such son or daughter is unavailable, due to a public health emergency. (B) Public health emergency The term public health emergency means an emergency with respect to COVID–19 declared by a Federal, State, or local authority. (C) Child care provider The term child care provider means a provider who receives compensation for providing child care services on a regular basis, including an eligible child care provider (as defined in section 658P of the Child Care and Development Block Grant Act of 1990 ( 42 U.S.C. 9858n )). (D) School The term school means an elementary school or secondary school as such terms are defined in section 8101 of the Elementary and Secondary Education Act of 1965 ( 20 U.S.C. 7801 ). (3) Regulatory Authorities The Secretary of Labor shall have the authority to issue regulations for good cause under sections 553(b)(B) and 553(d)(A) of title 5, United States Code— (A) to exclude