Hired Labor Agreement
The first uses of project employment contracts in the United States date back to several dam projects in the 1930s, including the Grand Coulee Dam in Washington, the Shasta Dam in California, and the Hoover Dam in Nevada.  Modern SAAs developed, in particular, from those used in construction during World War II, at a time when skilled labour was in demand, construction unions controlled 87% of the national market and public spending on construction had increased considerably in a short period of time. These first EPAs focused on setting uniform wage rates and preventing work stoppages.  During the 1960s, Cape Canaveral was one of the next PLA projects and the 1973-77 Trans-Alaska Gas Pipeline.