The part that trips people up most is that this leave is usually unpaid. The Family and Medical Leave Act, or FMLA, is a federal law that gives eligible employees up to 12 weeks of job-protected leave in a 12-month period for certain family and medical reasons, including a serious health condition, childbirth, adoption, or caring for a spouse, child, or parent with a serious health condition. It also requires the employer to keep the worker's group health coverage in place during the leave. Not every worker is covered: the law generally applies to employers with 50 or more employees within 75 miles, and the employee usually must have worked there at least 12 months and at least 1,250 hours.

In real life, FMLA can matter after a bad injury, surgery, or a high-speed crash on a long stretch of I-25 that leaves someone unable to work for a while. It can protect a job while that person recovers instead of forcing a choice between health and a paycheck.

For an injury or workplace-rights claim, FMLA often shows up when an employer denies leave, refuses reinstatement, or punishes someone for asking for time off. That can support an interference or retaliation claim separate from workers' compensation, disability discrimination, or wrongful termination. The main federal law is the Family and Medical Leave Act of 1993, enforced by the U.S. Department of Labor.