29 CFR § 825.112 - Qualifying reasons for leave, general rule.
(a) Circumstances qualifying for leave. Employers covered by FMLA are required to grant leave to eligible employees:
(5) Because of any qualifying exigency arising out of the fact that the employee's spouse, son, daughter, or parent is a military member on covered active duty (or has been notified of an impending call or order to covered active duty status (see §§ 825.122 and 825.126); and
(b) Equal application. The right to take leave under FMLA applies equally to male and female employees. A father, as well as a mother, can take family leave for the birth, placement for adoption, or foster care of a child.
(c) Active employee. In situations where the employer/employee relationship has been interrupted, such as an employee who has been on layoff, the employee must be recalled or otherwise be re-employed before being eligible for FMLA leave. Under such circumstances, an eligible employee is immediately entitled to further FMLA leave for a qualifying reason.