A public health insurance system run by municipalities, mainly for self-employed or unemployed people; paying premiums entitles insured persons to government-subsidized medical care.
会社を辞めたら、国民健康保険に加入しなければなりません。
If you quit your job, you have to enroll in the national health insurance.
国民健康保険の保険料は所得によって決まります。
National health insurance premiums are determined according to income.
病院で受診する時に国民健康保険のカードを提示してください。
Please show your national health insurance card when you visit the hospital.