time off for serious illnesses and family needs entitles eligible employees to unpaid leave FMLA Leave Law: In-Depth entitles eligible employees to unpaid leave FMLA Leave Law: In-Depth Family Medical Leave Act up to 12 weeks per year of unpaid sick leave 50 or more employees Family and Medical Leave Act (FMLA) guaranteed unpaid leave under the Family Medical Leave Act Family Medical Leave Act FMLA