That depends if the coverage is considered credible by Medicare. If the coverage is considered credible, then you are not required to enroll in a Medicare drug plan. This means that your employer prescription drug coverage is expected to pay, on average, as much as the standard Medicare prescription drug plan.
Your employer must provide a creditable coverage notice to all Medicare eligible individuals. Additionally, once you decide to move to a Medicare Part D prescription drug plan, your employer must provide you with a creditable coverage letter to give to Medicare so that you are not penalized for not having coverage.
Learn More: When can I enroll in Medicare Part D?
Commonly Asked: Does Medicare Plan F cover prescriptions?
People Also Read: I Don’t Take Any Prescriptions, Why Do I Need a Medicare Drug Plan?