The construction of the W. A. C. Bennett Dam involved over twenty unions that were bound by ten-year contracts guaranteeing BC Hydro no lockouts or strike action. This contract allowed the project to be built without labour delays. The men involved on the project were international, coming from around North America, Europe, and as far as Japan. The workers onsite lived in temporary camps built around the Portage Mountain site with more workers in the summer and fewer in the winter. Much of the construction occurred inside the dam which was claustrophobic, full of exhaust fumes, and occasionally subject to cave-ins. In total, 16 men have lost their lives working on the dam.