The Defense Base Act (also known as the “DBA”) is an extension of the Longshore and Harbor Workers’ Compensation Act (the “LHWCA” or the “Longshore Act”). During World War II, the United States increased the number of civilian contractors working abroad. Congress recognized a need to cover any such injured workers through workers’ compensation. Rather than develop an entirely new act, Congress chose to expand the already-existing Longshore Act. This means that the Longshore Act—through the Defense Base Act—may cover a truck driver in Iraq, a translator in Afghanistan, a researcher at the McMurdo Station in Antarctica, a USAID worker in Somalia, or an electrician working on the American embassy in Bangkok.
Broadly speaking, the Defense Base Act applies to civilians who are injured on a contract to perform public works or national defense services outside of the United States (often even if that injury is during or before deployment, such as while training stateside or on a flight). With some exceptions, it includes injuries during embassy construction projects. It also generally covers civilian employees who are injured on U.S. military bases abroad. The DBA is not limited to American citizens. If a company hires local nationals or third-country nationals, they are usually also covered.