Plumbing and electrical licenses don't transfer across state lines, trapping skilled workers in their home state's labor market

A master plumber licensed in Illinois who moves to Texas must start the licensing process over: new application, new exam, new fees, potentially new apprenticeship hour documentation. Fewer than half of U.S. states have enacted broad reciprocity agreements for construction trade licenses. Some states have narrow bilateral deals — Minnesota recognizes plumbing licenses from North Dakota and South Dakota, but not from Wisconsin or Iowa. Others require out-of-state plumbers to retake the full licensing exam even if they have 20 years of experience. This fragmentation directly worsens the skilled trades shortage by preventing labor from flowing to where it's needed most. When a city like Austin or Phoenix is booming with construction and desperately short on licensed electricians, qualified electricians in slower markets like Cleveland or Detroit can't simply relocate and start working. They face months of paperwork, exam prep, and fees — during which they can't legally pull permits or work independently. For a tradesperson supporting a family, that gap in earning capacity makes relocation economically irrational. The downstream impact hits homeowners and general contractors hardest. In fast-growing Sun Belt metros, the wait time to get a licensed plumber for a residential job can stretch to weeks. Housing construction timelines slip. Costs rise because the limited pool of locally-licensed contractors can charge premium rates. Meanwhile, qualified tradespeople in other states sit idle or underemployed. This problem persists because licensing is controlled at the state level, often by boards composed of incumbents who benefit from restricted competition. Each state has different code editions, different exam formats, and different hour requirements. There's no federal authority with the power or mandate to impose reciprocity. Interstate compacts have been proposed but move slowly because each state's licensing board must independently agree to participate, and incumbent licensees in each state have a financial incentive to keep out-of-state competition limited.