Deal Structure and Successor Liability Checklist: A Practical Checklist

Document type: Checklist Practice area: Business and Corporate — Mergers and Acquisitions Jurisdiction: United States Last reviewed: 5 September 2026

Work Part 1 before deciding on a structure. Everything after depends on it.

Part 1 — The liability inventory (first two weeks)

Environmental

Every parcel owned, leased, or formerly occupied, with dates of occupancy.
All existing Phase I and Phase II reports in the seller's files.
Federal and state contaminated-site registry searches for each parcel.
Consent orders, approved remediation plans, no-further-action letters.
Underground storage tanks, current and historical, with closure records.
Hazardous waste generator status; manifests; disposal site history (off-site disposal creates CERCLA arranger liability).
Whether a state transfer statute applies (New Jersey ISRA, Connecticut Transfer Act, or analogue).

Pension and benefits

Every collective bargaining agreement.
Every multiemployer plan, with a withdrawal liability estimate requested in week one — plans take four to eight weeks.
Plan zone status (endangered, critical, critical and declining) and any surcharges.
Single-employer defined benefit plans and funding status.
Retiree medical commitments.
Controlled group members that could create joint liability.

Employment

Headcount by site of employment, with WARN thresholds computed.
Applicable state mini-WARN statutes and their thresholds.
Union representation; pending NLRB charges and proceedings.
Pending EEOC charges, wage claims, and employment litigation.
Independent contractor and exempt classification practices, with a sample review.

Products

Every product line and the states where distributed.
Claims history, recalls, reserves, and pending suits.
Insurance by policy year: occurrence versus claims-made, limits, exhaustion, carrier solvency.
Whether any state of distribution applies the product line or continuity-of-enterprise doctrine.

Tax

Nexus by state and filing history in each.
Sales and use tax compliance, including on services.
Employment tax and worker classification.
Unclaimed property compliance.
Which states require bulk sales notice or offer clearance certificates.

Other

Licenses and permits, and whether each is transferable or must be reapplied for.
Litigation, pending and threatened.
Guarantees, letters of credit, surety obligations.
Regulatory investigations.

Then:

Build a one-page matrix: liability, estimated exposure, structural treatment, non-structural treatment, residual risk, cost.
Update it weekly. Every structuring decision comes out of this document.

Part 2 — The structure decision

For each candidate, test it against the matrix:

Stock or unit purchase — everything transfers; chosen where liabilities are modest or contracts and permits are hard to transfer.
Merger — same liability consequence; chosen for mechanical reasons.
Asset purchase — the default where liabilities are the concern.
Asset purchase excluding real property — leases instead of buys, avoiding current-owner CERCLA liability.
Divisional carve-out — requires a transition services agreement and separation of shared assets, contracts, and people.
Newly formed acquisition subsidiary — caps exposure if separateness is genuine; note that under United States v. Bestfoods, 524 U.S. 51 (1998) a parent may be directly liable as an operator if it directs pollution-related operations.
Section 363 sale — the strongest protection; requires a filing.
License or joint venture — where the exposure is unacceptable at any price.

Confirm before committing:

Which state's successor liability law could apply — including every state where products are distributed.
Whether the state applies the product line or continuity-of-enterprise doctrine.
Whether the four traditional exceptions could apply: express or implied assumption, de facto merger, mere continuation, fraudulent transaction.
Whether continuity of ownership exists (stock consideration to seller's owners) — the key de facto merger factor in most states.
Whether permits or licenses can transfer at all; if not, a stock deal may be forced.

Part 3 — The excluded liabilities schedule

Assumed liabilities stated as a closed list, each item specific or a precise category with a cap.
Excluded liabilities defined as a broad catch-all plus a specific enumeration of the known problems.
Expressly excluded: pre-closing operations; pre-closing products; pre-closing environmental conditions; benefit plans; pre-closing taxes; pre-closing employment matters; the specific diligence findings.
Seller indemnity for excluded liabilities: dollar-one, uncapped, with survival matched to the risk.
Collateral for the indemnity: escrow, guarantee from a solvent parent, or insurance.

Part 4 — Environmental

Phase I meeting the applicable standard, completed within the required window before acquisition.
Phase II where the Phase I identifies a recognized environmental condition.
Decide: do not acquire the property (lease), qualify as a bona fide prospective purchaser, insure, or escrow — usually two or three of these.

If relying on the bona fide prospective purchaser defense, confirm all of it:

All appropriate inquiry completed before acquisition.
No affiliation with a liable party.
Appropriate care: stopping continuing releases, preventing threatened releases, limiting exposure.
Cooperation and access provided.
Compliance with land use restrictions and institutional controls.
Notice of discovered releases.
A plan to maintain these obligations continuously — the defense is lost by lapse.

Also:

Pollution legal liability policy: limit, retention, term, and whether it covers known conditions, unknown conditions, and cost overruns.
Dedicated environmental escrow, sized to the estimate plus a contingency, released on certified milestones.
State transfer statute compliance started at signing (multi-month lead time; it is a closing condition).
Contribution rights under CERCLA § 113 preserved and not waived.

Part 5 — Multiemployer pensions

Withdrawal liability estimate requested from each plan in week one.
Decision made: satisfy § 4204 or accept and price the withdrawal.

If using § 4204:

Buyer obligated to contribute for substantially the same contribution base units.
Bond or escrow posted for five plan years, in the required amount.
Contract provides for seller's secondary liability if the buyer withdraws within five plan years.
Plan notified and, where required, its consent or acknowledgment obtained.

Regardless:

Separate indemnity and escrow for a successorship assessment notwithstanding § 4204 — notice plus substantial continuity supports such a claim.
Controlled group analysis completed for both sides.
Confirm the structure's purpose is not principally to evade or avoid liability, which is disregarded under ERISA § 4212(c).

Part 6 — Employment and labor

WARN:

Thresholds computed by site of employment for the seller pre-closing and the buyer post-closing.
Any planned reduction within 60 days of closing identified.
Decision made on who gives notice and when — usually the seller before closing, at the buyer's direction, with an indemnity.
State mini-WARN statutes checked: thresholds, notice periods, severance obligations.

Labor:

Decision made on whether to accept the bargaining obligation under Fall River Dyeing & Finishing Corp. v. NLRB, 482 U.S. 27 (1987).
Employee communications reviewed by labor counsel before they are sent, to avoid inadvertent "perfectly clear" successor status.
Offer letters issued by the buyer on the buyer's own initial terms.
No hiring decision based on union affiliation.
Pending NLRB matters diligenced and priced — a successor with notice may be ordered to remedy them under Golden State Bottling Co. v. NLRB, 414 U.S. 168 (1973).

Employment claims:

Pending charges and suits quantified.
Classification exposure modeled from a sample.
Special indemnity and escrow for classification, with survival matched to the limitations period.
Any post-closing conversion structured so it does not become an admission for pre-closing periods.

Part 7 — Tax clearance

Every state of nexus identified.
Bulk sales notices filed where required, with the required advance period (10–45 days).
Clearance certificates requested in every state that offers them.
Purchase price withheld pending certificates, in an amount covering the estimate plus a contingency.
Dollar-one uncapped indemnity for any assessment.
Employment tax and unclaimed property clearance addressed where available.
Timeline built into the closing schedule — certificates take four weeks to six months.

Part 8 — Insurance

From the seller:

Copies of every historical occurrence policy obtained, including decades-old ones.
Covenant that the seller will not cancel, rescind, settle, or release any policy without consent.
Tails purchased on every claims-made policy before it lapses: D&O, EPL, professional, cyber, products.
Buyer named as additional insured where the policy permits.
Carrier solvency checked for the years that matter.

For the buyer:

Representation and warranty insurance — with known matters handled by special indemnities.
Pollution legal liability where environmental exposure exists.
Products liability with a deliberately chosen retroactive date.
Successor liability coverage explored where the exposure is defined.

Part 9 — Consents and closing mechanics

Every contract requiring consent to assign identified and ranked by importance.
Change-of-control provisions identified (relevant in stock deals too).
Critical consents made closing conditions, with a price adjustment or walk right.
Permits and licenses: transferability confirmed; reapplication lead times determined.
Separate bills of sale and assignment documents for each asset category.
Assignment and assumption agreement matching the schedules exactly.
Real property conveyed or leased per the environmental decision.
UCC-3 terminations filed and confirmed.
New EIN, payroll, and benefit plans — the seller's plans not adopted.
New customer-facing documents: invoices, terms, warranties from the buyer entity.
Written internal instruction to finance, customer service, and operations on handling pre-closing claims.

Part 10 — Distressed deals

Seller solvency assessed; a solvency certificate obtained, and a third-party opinion where leveraged.
Price supported by a marketing process, competing offers, or a valuation.
No distribution structure favoring owners over creditors.
Notice given under any applicable bulk sales or dissolution statute.
Fraudulent transfer exposure assessed against the badges of fraud.
Where liabilities approach enterprise value, a § 363 sale evaluated.

If using a 363 sale, the order should include:

Free and clear findings enumerating successor liability categories specifically.
A finding that the buyer is not a successor for any purpose.
A good faith finding under § 363(m).
A finding that the price is fair and resulted from a marketing process.
Retention of jurisdiction to enforce.
Treatment of future claims: bar date, publication notice, channeling injunction and trust where warranted.
Contracts assumed and assigned under § 365, with cure amounts determined.
Recognition that current-owner CERCLA liability, ongoing regulatory obligations, WARN, and labor successorship based on the buyer's own conduct may survive.

Part 11 — Post-closing conduct

No payment of excluded liabilities without a written non-assumption acknowledgment.
Seller's benefit plans not adopted.
Seller's warranties not honored unless assumed.
Holding out and name usage consistent with the intended position.
Product line changes implemented where a product line exception state is in play.
Escrow release dates and indemnity survival dates calendared with a named owner.
Bona fide prospective purchaser obligations maintained and documented.
Insurance tails renewed or confirmed as paid.

Part 12 — The seller's obligations

Entity kept in existence and solvent through the indemnity period.
Proceeds retained sufficient to fund known and anticipated liabilities.
All tails purchased before policies lapse.
Historical occurrence policies preserved and not released.
Sellers' representative appointed with an expense fund and binding authority.
Dissolution statute claims procedure followed precisely, if winding up.
Books, insurance files, and environmental records preserved.
Escrow release dates calendared and pursued.