Does my employer have to pay out my unused PTO when I leave?
Three patterns cover the country:
Mandatory payout states. California (Lab. Code § 227.3), Colorado (earned vacation can't be forfeited), Illinois (820 ILCS 115/5), Massachusetts (vacation is wages under c.149 § 148), Nebraska (48-1229) — plus conditional versions in Maine, Rhode Island, Maryland, and Louisiana (eligible, accrued, untaken vacation is an amount due). In these states, "use it or lose it at termination" clauses fail.
Policy-enforced states. Most states: no statute mandates payout, but a policy that promises it creates an enforceable wage. Pennsylvania's WPCL and North Carolina's written-notice rule are the strictest versions — in NC, forfeiture works only if you were notified of the policy in writing.
Silent states. The no-statute states (Georgia, Florida, Alabama, Mississippi): your policy and your employment agreement are the whole story.
Every state's specific rule, with the statute cite, is on its page in the state law library.
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Educational content, not legal advice. For a live dispute, consult a licensed employment attorney in your state.