Under the Family and Medical Leave Act (FMLA), employees are eligible for leave if they have worked for their employer at least 12 months, at least 1,250 hours over the past 12 months, and work at a location where the company employs 50 or more employees within 75 miles.
Consequently, part-time employees generally do not qualify for FMLA leave because they do not meet the 1,250-hour requirement.
However, a new bill introduced last month in the U.S. House of Representatives would change that if signed into law. It's called the Part-Time Worker Bill of Rights Act of 2013 and you can download a copy of it here.
The Part-Time Worker Bill of Rights Act of 2013 would remove the 1,250-hour requirement. Thus, any employee with at least one year of service, working at a location where the company employs 50 or more employees within 75 miles, would qualify for FMLA.
Presently, the bill sits in Committee. It has a single sponsor, Rep. Janice Schakowsky [D-IL9], and govtrack.us gives it a 1% chance of passing.