Why South Carolinians working for larger companies have more flexibility — but still need a strategy

If you're turning 65 and still working for a larger employer in South Carolina — a company with 20 or more employees — your Medicare decisions look very different from someone working for a small business.

The good news: you have flexibility.
The bad news: making the wrong choice can still cost you.

Here’s how to get it right.

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The Key Difference With Large Employers

If your employer has 20 or more employees, your employer health insurance remains primary and Medicare becomes secondary.

That means:

• Your employer plan pays first
• Medicare pays second (if you enroll)
• You are not required to enroll in Medicare at 65

This is the opposite of the small employer rule — and it’s where many people get confused.

Because of this, you can typically delay Medicare Part B without penalty as long as you stay covered under your employer’s group plan.

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So… Should You Enroll in Medicare at 65?

It depends. There are three common strategies, and the right one comes down to cost, coverage, and your future plans.

Option 1 — Stay on Employer Plan Only (Delay Part B)

Many people choose to:

• Enroll in Part A (hospital coverage) — usually free
• Delay Part B (medical coverage) to avoid the monthly premium

This works well if:

• Your employer coverage is strong
• You’re still actively working
• You want to avoid paying for two plans

Important: You must have active employer coverage (not COBRA or retiree coverage) to delay without penalty.

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Option 2 — Enroll in Both Medicare and Employer Coverage

Some people choose dual coverage:

• Medicare + employer plan
• Employer pays first, Medicare may reduce out-of-pocket costs

This can make sense if:

• Your employer plan has high deductibles or copays
• You have frequent medical needs
• You want broader provider flexibility

The tradeoff: you’re paying two premiums, so the math has to make sense.

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Option 3 — Leave Employer Plan and Go Fully on Medicare

In some cases, Medicare is actually the better deal.

This may be worth considering if:

• Your employer coverage is expensive
• Your network is limited
• You want predictable costs with a Medicare Supplement or Advantage plan

We often see this with employees whose share of group coverage premiums has increased significantly.

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The Deadline That Matters Most

Even if you delay Medicare at 65, you don’t get unlimited time.

When you leave your employer coverage, a clock starts:

• You have an 8-month Special Enrollment Period to enroll in Medicare Part B
• If you miss it, you could face:
  • Permanent penalties
  • Coverage gaps

This is one of the most common (and costly) mistakes we see.

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What Counts as “Large Employer Coverage”?

To delay Medicare safely, your coverage must be:

• From an employer with 20+ employees
• Active employment coverage (yours or your spouse’s)

These do NOT qualify:

• COBRA
• Retiree coverage
• Marketplace (ACA) plans

If you rely on one of these and delay Medicare, you could be setting yourself up for penalties.

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A Real Scenario We See in South Carolina

A 66-year-old in Columbia works for a company with 50 employees. His employer coverage is solid, so he delays Medicare Part B and keeps working.

At 68, he retires and assumes he can “just sign up” for Medicare anytime.

He waits 10 months.

Now:

• He’s outside the 8-month window
• He must wait for the General Enrollment Period
• He faces a lifetime Part B penalty
• He experiences a gap in coverage

This scenario is avoidable with proper timing.

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What You Should Do Before You Decide

Step 1 — Confirm your employer size (20+ employees)
Step 2 — Compare your employer plan costs vs. Medicare options
Step 3 — Decide whether to enroll in Part A, Part B, or both
Step 4 — Understand your exit timing before leaving your job
Step 5 — Talk to a Medicare agent before making any moves

A short conversation now can prevent long-term consequences.

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How Mauldin Insurance Group Helps

At Mauldin Insurance Group, we help working professionals across Lexington, Columbia, and the Midlands evaluate their options when turning 65.

Jennifer focuses on Medicare planning, while Ben works on employer-side benefits — giving you a full picture of how everything fits together.

Our guidance is free. The goal is simple:
help you avoid penalties, eliminate guesswork, and make a confident decision.

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📖 Full Guide: Working Past 65 in South Carolina — All Scenarios
midlandsmedicare.com/working-past-65-south-carolina

Covers:

• Large employer vs. small employer rules
• Spouse coverage strategies
• HSA considerations
• Special Enrollment Period timing
• Pre-65 checklist

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Turning 65 and working for a large employer in SC?
Call Jennifer before making your Medicare decision.

Call or text: (843) 509-2462
mauldininsurancegroup.com/health-insurance