(a) In general
(1) Entitlement to leave
Subject to section 2613 of this title, an eligible employee shall be entitled to a total of 12 workweeks of leave during any 12-month period for one or more of the following: (A) Because of the birth of a son or daughter of the employee and in order to care for such son or daughter.
(B) Because of the placement of a son or daughter with the employee for adoption or foster care.
(C) In order to care for the spouse, or a son, daughter, or parent, of the employee, if such spouse, son, daughter, or parent has a serious health condition.
(D) Because of a serious health condition that makes the employee unable to perform the functions of the position of such employee.
(2) Expiration of entitlement
The entitlement to leave under subparagraphs (A) and (B) of paragraph (1) for a birth or placement of a son or daughter shall expire at the end of the 12-month period beginning on the date of such birth or placement.
(b) Leave taken intermittently or on a reduced leave schedule
(1) In general
Leave under subparagraph (A) or (B) of subsection (a)(1) of this section shall not be taken by an employee intermittently or on a reduced leave schedule unless the employee and the employer of the employee agree otherwise. Subject to paragraph (2), subsection (e)(2) of this section, and section 2613(b)(5) of this title, leave under subparagraph (C) or (D) of subsection (a)(1) of this section may be taken intermittently or on a reduced leave schedule when medically necessary. The taking of leave intermittently or on a reduced leave schedule pursuant to this paragraph shall not result in a reduction in the total amount of leave to which the employee is entitled under subsection (a) of this section beyond the amount of leave actually taken.
(2) Alternative position
If an employee requests intermittent leave, or leave on a reduced leave schedule, under subparagraph (C) or (D) of subsection (a)(1) of this section, that is foreseeable based on planned medical treatment, the employer may require such employee to transfer temporarily to an available alternative position offered by the employer for which the employee is qualified and that--
(A) has equivalent pay and benefits; and
(B) better accommodates recurring periods of leave than the regular employment position of the employee.
(c) Unpaid leave permitted
Except as provided in subsection (d) of this section, leave granted under subsection (a) of this section may consist of unpaid leave. Where an employee is otherwise exempt under regulations issued by the Secretary pursuant to section 213(a)(1) of this title, the compliance of an employer with this subchapter by providing unpaid leave shall not affect the exempt status of the employee under such section.
(d) Relationship to paid leave
(1) Unpaid leave
If an employer provides paid leave for fewer than 12 workweeks, the additional weeks of leave necessary to attain the 12 workweeks of leave required under this subchapter may be provided without compensation.
(2) Substitution of paid leave
(A) In general
An eligible employee may elect, or an employer may require the employee, to substitute any of the accrued paid vacation leave, personal leave, or family leave of the employee for leave provided under subparagraph (A), (B), or (C) of subsection (a)(1) of this section for any part of the 12-week period of such leave under such subsection.
(B) Serious health condition
An eligible employee may elect, or an employer may require the employee, to substitute any of the accrued paid vacation leave, personal leave, or medical or sick leave of the employee for leave provided under subparagraph (C) or (D) of subsection (a)(1) of this section for any part of the 12-week period of such leave under such subsection, except that nothing in this subchapter shall require an employer to provide paid sick leave or paid medical leave in any situation in which such employer would not normally provide any such paid leave.
(e) Foreseeable leave
(1) Requirement of notice
In any case in which the necessity for leave under subparagraph (A) or (B) of subsection (a)(1) of this section is foreseeable based on an expected birth or placement, the employee shall provide the employer with not less than 30 days' notice, before the date the leave is to begin, of the employee's intention to take leave under such subparagraph, except that if the date of the birth or placement requires leave to begin in less than 30 days, the employee shall provide such notice as is practicable.
(2) Duties of employee
In any case in which the necessity for leave under subparagraph (C) or (D) of subsection (a)(1) of this section is foreseeable based on planned medical treatment, the employee--
(A) shall make a reasonable effort to schedule the treatment so as not to disrupt unduly the operations of the employer, subject to the approval of the health care provider of the employee or the health care provider of the son, daughter, spouse, or parent of the employee, as appropriate; and
(B) shall provide the employer with not less than 30 days' notice, before the date the leave is to begin, of the employee's intention to take leave under such subparagraph, except that if the date of the treatment requires leave to begin in less than 30 days, the employee shall provide such notice as is practicable.
(f) Spouses employed by the same employer
In any case in which a husband and wife entitled to leave under subsection (a) of this section are employed by the same employer, the aggregate number of workweeks of leave to which both may be entitled may be limited to 12 workweeks during any 12-month period, if such leave is taken--
(1) under subparagraph (A) or (B) of subsection (a)(1) of this section; or (2) to care for a sick parent under subparagraph (C) of such subsection.
(Pub. L. 103-3, title I, Sec. 102, Feb. 5, 1993, 107 Stat. 9.)