Some employers will offer legacy employees continued health care coverage even after retirement, but it is not very common these days. The costs of health care are rising too quickly for most corporations to keep up.
Some corporations will continue to pay a percentage of premiums for their retirees, but more often than not it is up to the retiree to obtain their own health care. Following employment, most people are eligible for COBRA, and then later in life you can purchase plans through Medicare and Medicaid.
What if I Need the Money in My 401(k) Before I Retire?
What Happens If I Withdraw Money From My Pension Plan After I Retire?
What if I Want to Retire Abroad?