Employee benefits in a merger or acquisition: what carries over, what ends and who owes what.
How deal structure decides who keeps the plan, who owes COBRA, how the ACA headcount changes, and the benefits questions to settle before closing. Written for the owner, CFO or HR lead.
Benefits Are Part of the Deal, Whether or Not Anyone Priced Them
Plans, carrier contracts, claims liabilities and employee expectations all move with a transaction in ways that depend on how it is structured. The benefits work is easiest when it starts before the letter of intent.
Plans Are Contracts
Each group health plan has a plan document, a carrier or stop-loss contract and a set of promises in the benefits guide. The deal decides which of those the buyer inherits. Ask for the plan document, the carrier and stop-loss contracts and the current guide early, and compare them side by side. Gaps between them are where surprises tend to appear after closing.
Employees Notice First
Coverage that changes on the first day is the part of a transaction employees feel most. A clean handoff protects retention in the weeks that matter. Decide before closing who will answer questions, which ID cards and portals employees will use and what happens to claims in progress. Send one clear message ahead of the first day.
The Cost Is Rarely in the Model
A rate increase, a run-out liability or a late filing penalty inherited in the deal is a real cost that seldom appears in the purchase price. Ask your broker to review renewal timing, claims trends and any open filings before the price is set. Raise anything material with deal counsel so it can be priced or covered in the agreement.
Stock Purchase or Asset Purchase
The same company can change hands two ways, and the benefits consequences differ.
Stock Purchase
The company that sponsors the plans stays the same legal entity under new ownership. Its plans, contracts, filings and unresolved liabilities stay with it unless the buyer changes them after closing. Because the plans stay with the company, review them as part of due diligence rather than assuming a clean slate. Ask counsel what to require from the seller in the agreement before closing.
Asset Purchase
The seller generally keeps its plans and their liabilities unless the buyer agrees to take them. The buyer usually hires the workforce and covers them under its own plan or a new one, which raises transition questions on day one.
Merger
Which entity survives, and which plan document governs afterward, is set by the merger agreement. The surviving company’s plans usually continue and the other’s are merged, frozen or terminated. Read the merger agreement for the plan provisions and check how each plan treats employees from the other company. Coordinate timing with carriers, because coverage can end or change without notice if no one tells them.
Why It Matters Early
Structure is chosen for tax and liability reasons, and the benefits consequences follow. Bring benefits counsel into the room before the structure is final, not after. Early involvement lets you price benefit obligations, choose a plan path and avoid commitments that are hard to undo. Share the benefits questions with deal counsel as soon as a structure is proposed.
Who Owes Continuation Coverage After Closing
The rules assign the obligation by deal structure and by who still has a group health plan, and the answer is sometimes surprising.
The Selling Side Keeps It While It Has a Plan
Under the federal COBRA rules for sales of a business, the selling group generally remains responsible for qualified beneficiaries from the sold business while it maintains any group health plan. Confirm who is responsible for notices and premiums during the transition period, and write it down. Ask counsel to apply the rules to your facts, since the answer depends on the deal structure and which plans remain.
The Buyer Can Inherit It
If the seller stops providing any group health plan to any employee in connection with the sale, the buyer can become responsible as a successor employer, which applies when it continues the business without substantial interruption. Ask counsel to review the facts, and cover who handles notices, premiums and costs in the agreement. Do not rely on the seller’s promise alone.
The Quiet Qualified Beneficiaries
People already on COBRA, and employees terminated in the deal, are qualified beneficiaries whose rights need a named owner. Missing them is the most common cleanup after closing. Assemble a list of current COBRA participants, the dates they started and the notices sent, and assign one person to maintain it. Check that no one terminated in the deal is missed, since late notices can be costly.
Put It in the Agreement
The purchase agreement should say which party handles notices, premium collection and the costs. The statute says who is ultimately liable; the contract says who pays. Name the responsible party and set deadlines for each task, such as sending notices and collecting premiums. Have counsel review the language, and decide in advance how disputes about costs will be resolved.
Combining Two Employers Changes the Mandate Math
The employer mandate looks at the controlled group, so a deal can move a small employer over the line or add reporting duties overnight.
Controlled Groups Combine
Businesses under common ownership are aggregated to decide whether the group has fifty full-time employees. Each member still carries its own reporting and offer-of-coverage obligations. Check whether the combined group crosses the threshold, and ask counsel how the rules apply to your ownership structure. The answer drives whether you must offer coverage and file reports, so confirm it before closing.
The Line Can Move Mid-Year
An acquisition can turn a below-threshold employer into an applicable large employer for the next year. Plan for the first measurement period before the second company’s hours arrive. Start tracking hours for the new employees as early as the rules allow, and review your measurement method with your adviser. A late discovery can mean offers of coverage that come too late or incomplete reports.
Reporting Follows the Entity
Form 1095-C filings are by employer entity. The acquisition date, successor rules and any change in EIN decide who files, so the data hand-off is part of the closing checklist. Confirm who will collect the data, who will file and which employer number applies. Ask the seller to deliver hours and coverage records for the period before closing, so the filing is complete and consistent.
What To Ask For Before Signing
A benefits review of the target takes days and routinely finds items worth a price adjustment or a closing condition.
Plan Documents and Filings
Plan documents, summary plan descriptions, Form 5500 filings, nondiscrimination testing results and the most recent compliance notices. Gaps here are inherited gaps. Request these items in the diligence list and compare them with what the plan actually does. Missing documents can be a sign of missed filings, so ask counsel what to fix before or after closing.
Claims and Stop-Loss
Twenty-four to thirty-six months of claims history, large-claimant reports, stop-loss contracts, run-out terms and any lasered individuals. Self-funded plans carry unpaid claims that become the buyer’s problem. Ask who pays claims incurred before closing and how long each party remains responsible. Check stop-loss terms for limits that do not carry over to a new owner, and ask the broker to explain any exclusions.
Open Compliance Items
IRS letters about ACA reporting, late filings, disputed COBRA notices and any pending agency inquiries. Ask what is outstanding rather than what has been filed. Ask the seller to list every open notice, letter or inquiry and the date of the last response. Give counsel the list before closing so open items can be resolved or assigned in the purchase agreement.
Liabilities Off the Balance Sheet
Retiree medical promises, severance commitments tied to benefits, and union agreements with benefit terms all follow the employees even if no plan document mentions them. Review employment agreements, handbooks and labor contracts as well as plan documents to find these commitments. Ask counsel to assess what applies to employees who join the company, and price it into the deal.
Moving Employees Onto One Plan
Three timing choices drive most of the employee experience.
Keep Both Plans Through Year-End
The simplest path. Employees keep what they have, deductibles are not reset, and the buyer harmonizes at the next open enrollment. It costs a year of two administrations. Make sure the carrier agrees to keep the acquired group on its current contract through the year, and confirm that eligibility and billing stay in place. Tell employees plainly that changes are coming at the next enrollment.
Move Everyone to One Plan at Closing
Cleaner, but it ends coverage mid-year for one group. Ask the new carrier for deductible and out-of-pocket credit for amounts already paid, since that is a carrier practice rather than a legal right. Confirm the effective date with both carriers and compare contracts for waiting periods and eligibility. Employees should get written notice well in advance, since a mid-year change can surprise people who are in treatment.
Phase It
Bring the acquired group onto the buyer’s plan at the first of a month after closing, with waiting periods waived and prior service credited. A change like this is generally a permitted election-change event under a cafeteria plan. Ask counsel to confirm the plan terms and cafeteria plan rules before you commit, since the answer depends on both plans. Tell employees in writing what is changing and when.
What Has To Be Told, Filed and Updated
A transaction triggers notices that employers often forget until an employee asks.
Summary of Material Modifications
A material change to a plan has to be communicated, generally within 210 days after the plan year in which it was adopted, or 60 days after adoption for a reduction in covered services. Faster is better. Have counsel decide which document the change belongs in and who sends it. Keep a copy of the notice and its delivery date.
Updated Plan Documents
The wrap document, the benefits guide and the summary plan description should name the right sponsor and the right plan after closing. Update eligibility language, contact information and effective dates, and replace old versions with the new ones. Ask your adviser which documents need formal approval, so employees do not rely on outdated information.
Form 5500 and Carrier Notices
A plan that merges or ends changes what gets filed that year. Carriers need written notice of the new owner, the new group number and the effective date. Ask your adviser and counsel what must be filed and by whom after the change. Keep copies of the carrier correspondence and confirm that the carrier has updated billing and eligibility records for the new owner.
Questions Worth Answering Before the Letter of Intent
These four questions decide most of the benefits cost of a deal.
Is the Target’s Plan Better or Worse Than Ours
Moving employees to a richer plan has a price and moving them to a leaner one has a retention risk. Know the gap in dollars per employee before you decide. Compare benefits, employee cost, network and funding method for each plan. Ask your broker to model the cost of each path, and consider how each path will look to employees who are being asked to move.
What Happens to Open Claims
Self-funded run-out, stop-loss terms and unpaid claims need a named owner, with a number attached. Ask for the claims reports, the contract terms and the name of whoever will pay. Without an owner and a figure, unpaid claims can become a dispute after closing, and employees can be caught in the middle.
Who Is Our Contact on the Other Side
A named person at the seller who owns data, files and carrier relationships saves weeks of chasing. Ask for one person on the seller’s side who can provide files, answer questions and talk to carriers. Agree on a hand-off date and a list of what will be delivered, so nothing waits on someone who has left.
What Do Employees Hear and When
Tell people what stays, what changes and by when, in writing, before the first day. Prepare a short summary covering plan, cost, ID cards and contacts, and send it before closing. Follow up with a meeting or call so employees can ask questions, and give managers the same facts.
The questions that come before closing.
Six questions owners and CFOs bring us about benefits in a transaction.
Do we have to keep the target’s health plan after we buy the company?
Not necessarily. In a stock purchase the plan stays with the company until you change it, and you can usually terminate or merge it with proper timing and notice. Contract and union terms may limit your choices.
What happens to employees’ deductibles mid-year?
There is no automatic legal protection. Ask the new carrier for credit for amounts already paid, and settle it in writing before the move.
Do we owe COBRA to employees we let go in the deal?
Possibly. Who owes it depends on the structure and on which side still has a group health plan after closing. Name the responsible party in the agreement.
Does the target count toward our fifty-employee line?
If the two companies are under common ownership they are aggregated for the employer mandate. Each entity still has its own reporting and offer obligations.
Can we offer a different plan to the acquired group?
A plan can have separate classes, but classifications must be reasonable, and self-funded plans have nondiscrimination rules. Keep the groups on separate class terms until you can harmonize, with the reasoning in writing.
When should we involve a benefits consultant?
As soon as the letter of intent exists. The questions that change the price, such as claims history and open liabilities, are cheapest to ask before signing.
Ready? Send us your renewal, or talk it through with someone first. No cost, no obligation.
General information about benefits in business transactions, not legal advice. Deal structure and plan-specific questions belong with transaction counsel and ERISA counsel, and we will bring them in.
Related guides.
Changing Carriers Mid-Stream
What moves with the group when the carrier changes.
COBRA Administration
Notices, deadlines and who owns them.
Crossing Fifty Employees
What changes when headcount tips the mandate.
Retiree Health Benefits Guide
Promises, vesting and making changes.
Send us your renewal.
We’ll tell you whether it looks competitive, where we see opportunity, and the five questions we’d put to your carrier. No cost, and no obligation to move anything.
The renewal letter
Your current plan summary
Contribution split by tier
Enrolled counts by tier
Four documents — two more if your group is 50 or more. Nothing else; every extra one is a reason to postpone.
Laws and rules referenced
26 C.F.R. § 54.4980B-9 — Who owes COBRA coverage after a business reorganization or sale.
26 U.S.C. § 414(b), (c) and (m) — Controlled group and affiliated service group rules, and church plan definition in subsection (e).
This page is general information, not legal or tax advice. Rules change and facts matter, so confirm your situation with counsel or a qualified advisor.
An independent employee benefits consulting firm. We look at the entire benefits program — cost, plan performance, risk and administration.
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