Employees are eligible to take FMLA leave if they work for a covered employer and:
have worked for their employer for at least 12 months;
have at least 1,250 hours of service over the previous 12 months; and
work at a location where at least 50 employees are employed by the employer within 75 miles.
Special hours of service requirements apply to airline flight crew employees and to breaks in service to fulfill National Guard or Reserve military service obligations pursuant to the Uniformed Services Employment and Reemployment Rights Act (USERRA).  (See the U.S. Department of Labor Wage and Hour Division or call 1-866-487-9243 for additional information on FMLA.)
Reference Article
See our step-by-step FMLA Guide