The compulsory insurance can be supplemented by private "complementary" insurance policies that allow for coverage of some of the treatment categories not covered by the basic insurance or to improve the standard of room and service in case of hospitalisation. This can include complementary medicine, routine dental treatment and private ward hospitalisation, which are not covered by the compulsory insurance.
Hospital and medical expense policies were introduced during the first half of the 20th century. During the 1920s, individual hospitals began offering services to individuals on a pre-paid basis, eventually leading to the development of Blue Cross organizations.[65] The predecessors of today's Health Maintenance Organizations (HMOs) originated beginning in 1929, through the 1930s and on during World War II.[67][68]
Employer-sponsored health insurance plans dramatically expanded as a direct result of wage controls imposed by the federal government during World War II.[20] The labor market was tight because of the increased demand for goods and decreased supply of workers during the war. Federally imposed wage and price controls prohibited manufacturers and other employers from raising wages enough to attract workers. When the War Labor Board declared that fringe benefits, such as sick leave and health insurance, did not count as wages for the purpose of wage controls, employers responded with significantly increased offers of fringe benefits, especially health care coverage, to attract workers.[20]
Individuals injured on the job while employed by private companies or state and local government agencies should contact their state workers' compensation board. The Department of Labor has several programs designed to prevent work-related injuries and illnesses. You may obtain information about these programs by visiting the Workplace Safety & Health page.

Our health benefit plans, dental plans, vision plans, and life insurance plans have exclusions, limitations and terms under which the coverage may be continued in force or discontinued. Our dental plans, vision plans, and life insurance plans may also have waiting periods. For costs and complete details of coverage, call or write Humana or your Humana insurance agent or broker.