national insurance(redirected from Class 4 national insurance)
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(Insurance) (in Britain) state insurance based on weekly contributions from employees and employers and providing payments to the unemployed, the sick, the retired, etc, as well as medical services. See also social security
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|Noun||1.||national insurance - social insurance program in Britain; based on contributions from employers and employees; provides payments to unemployed and sick and retired people as well as medical services|
social insurance - government provision for unemployed, injured, or aged people; financed by contributions from employers and employees as well as by government revenue