• The Defense Bases Act is a law that extends the LHWCA to certain categories of employees working overseas. The three main divisions of insured employees are: (1) those who work on military bases acquired from a foreign government after 1940, (2) employees of civilian contractors and subcontractors engaged in public works projects for the U.S. government outside the continental United States, and (3) persons employed outside the continental United States by a US employer whose purpose is to provide welfare or other similar services to the Armed Forces as approved by the Secretary of Defense.