These days, turning 65 doesn't have to mean hanging up your career. But it does represent one big milestone: Medicare eligibility. In most cases, signing up for Medicare Part A is a no-brainer.

For instance, in companies with fewer than 20 employees, Medicare is the primary payer, meaning that seniors must sign up as soon as they are eligible. If you delay your signup, you might end up ...

Once a person has received these benefits for 24 months, they can sign up for a Medicare plan, even though they are under age 65 years. A person with a disability may otherwise have difficulty ...