All Singapore Citizens and Permanent Residents are required to join MediShield Life. Under MediShield Life, Singapore Residents will remain insured and receive lifelong protection for large hospital bills. The Government will provide support for premiums for the needy who are unable to pay. Even if you incur very large bills over your lifetime.  The insurance cover will not be terminated when you get very sick

Unlike MediShield Life, other healthcare coverage is not guaranteed for life. For example, employees with healthcare coverage from their employers will lose such coverage when they leave employment or retire. For those with other private insurance, they may lose this coverage if they are unable to pay for premiums, and they may not be able to re-apply for coverage later if they have already developed some health conditions.

This information is sourced from MOH