Key Takeaways
- An asset purchase buyer who hires a majority of its workforce from the predecessor's union employees and continues the same business is a successor under Burns, obligated to bargain with the union -- but not automatically bound to the existing CBA's terms if it properly announces intent to set new conditions before making job offers.
- Multiemployer pension withdrawal liability under MPPAA is often the largest undisclosed liability in a manufacturing acquisition. Buyers must quantify the plan's unfunded vested benefit exposure and understand how the transaction structure affects whether withdrawal liability is triggered or assumed.
- Stock purchases transfer the CBA automatically because the legal employer does not change. Asset purchases require a successorship analysis but do not automatically transfer all CBA obligations -- the distinction is fundamental and must be understood before deal structure is selected.
- WARN Act obligations apply to unionized and non-union workforces alike. Union deals add a separate layer: the CBA may impose independent notice, severance, and effects-bargaining obligations that survive the acquisition and impose significant post-close costs if not identified in diligence.
Manufacturing businesses represent a significant share of unionized workplaces in the United States. Automotive suppliers, metal fabricators, food processors, and industrial manufacturers frequently operate under collective bargaining agreements that govern wages, benefits, working conditions, seniority, and grievance procedures. When a buyer acquires one of these businesses, the union does not simply disappear.
The National Labor Relations Act, as interpreted through decades of NLRB decisions and federal court precedent, creates a framework of successor employer obligations that attach regardless of how the transaction is structured. Multiemployer pension obligations under MPPAA can result in withdrawal liability running into millions of dollars. The WARN Act imposes notice obligations on buyers planning post-close workforce reductions. And the purchase agreement must contain labor representations and warranties that accurately allocate risk between buyer and seller.
This guide is part of the Manufacturing M&A: Legal Guide for Industrial Acquisitions. It addresses the complete framework for union CBA successorship in manufacturing transactions: the governing legal doctrine, the diligence questions that determine exposure, the deal structuring choices that affect outcomes, and the post-close integration obligations that continue after closing day.
Buyers approaching a manufacturing acquisition should also review the environmental diligence framework in the environmental diligence guide and the equipment and real property analysis covered in the equipment and real property guide. Labor obligations are one of three major liability categories in manufacturing M&A that require specialized diligence protocols.
Why Union Contracts Complicate Manufacturing M&A
A collective bargaining agreement is not simply a contract between an employer and its employees. It is a legally enforceable instrument that governs the employment relationship between the employer and a certified bargaining unit represented by a union. The CBA creates rights and obligations that are specifically protected under federal labor law and that survive many of the transactional structures buyers use to limit liability.
The complications begin with the threshold question: who is the employer? In a manufacturing acquisition structured as a stock purchase, the answer is straightforward -- the legal entity continues unchanged, the CBA survives, and the buyer steps into the seller's shoes. In an asset purchase, the buyer is a new legal entity that was never party to the CBA. Whether that buyer assumes CBA obligations depends on successorship doctrine, which is grounded in federal labor policy rather than state contract law.
Primary Risk Categories in Unionized Manufacturing Acquisitions
Burns Rule and Perfectly Clear Successor Doctrine
The foundational case in successorship law is NLRB v. Burns International Security Services, Inc., 406 U.S. 272 (1972). Burns established two principles that govern virtually every successorship analysis in manufacturing M&A. First, a successor employer has an obligation to bargain with the incumbent union if the successor hires a majority of its employees from the predecessor's workforce. Second, the successor is not automatically bound by the predecessor's CBA -- the successor may set its own initial terms and conditions of employment.
The Burns Rule created an important distinction: the obligation to recognize and bargain with the union is mandatory, but the obligation to adopt the specific CBA terms is not. A successor employer who properly structures the transition can operate under different wages, benefits, and working conditions than the predecessor -- provided the successor bargains in good faith with the union before implementing those changes permanently.
The exception to the Burns Rule is the perfectly clear successor doctrine. The Supreme Court in Burns noted that if the new employer is a "perfectly clear" successor -- meaning it has retained all or substantially all of the predecessor's employees under conditions that create a reasonable expectation of continued employment on the same terms -- then the successor may not unilaterally set new initial terms. The practical effect: a buyer who hires the entire predecessor workforce without communicating intended changes in employment terms is bound to the predecessor's CBA.
The critical timing rule: To preserve the right to set initial employment terms, a buyer must announce intended changes to wages, benefits, and working conditions before making job offers to the predecessor's employees and before the predecessor's employees have a reasonable expectation that they will be retained on existing terms. Announcements made after offers are extended, or after employees have already been told they will be retained, may be too late to avoid perfectly clear successor status. This sequencing must be planned before outreach to any predecessor employees begins.
Obligation to Bargain vs. Obligation to Adopt
The distinction between the obligation to bargain and the obligation to adopt the existing CBA is one of the most practically important concepts in successorship law. Both obligations arise from the same underlying recognition of the union, but they operate differently and carry different legal consequences.
The obligation to bargain attaches when the buyer is a successor employer -- meaning it hires a majority of its workforce from the predecessor's bargaining unit and continues essentially the same business operation. This obligation is not negotiable and cannot be contracted away in the purchase agreement between buyer and seller. A buyer who acquires an asset and becomes a successor has an immediate duty to recognize the union as the collective bargaining representative of its employees. Refusing to recognize the union, withdrawing recognition without a valid good-faith doubt, or implementing terms without bargaining are all unfair labor practices under Section 8(a)(5) of the NLRA.
The obligation to adopt the existing CBA arises only in the perfectly clear successor situation. In the ordinary Burns successor case, the buyer may set its own initial terms and begin bargaining from a new position. The union retains the right to strike over the new terms; the buyer retains the right to implement a last best offer after bargaining to impasse through good-faith negotiations. The CBA's substantive terms do not apply to the buyer as a legal obligation -- though the buyer may choose to adopt some or all of them as a practical matter to maintain workforce continuity.
Practical implication for buyers: Structuring the transition to preserve the right to set initial terms does not mean the buyer can offer dramatically inferior employment conditions. Offering terms so unfavorable that the workforce resigns en masse defeats the purpose of the acquisition. The goal is to have flexibility to negotiate from a clean position rather than being locked into CBA provisions that may not fit the buyer's operational model.
Union certification survives the acquisition: Even when a buyer is permitted to set initial terms, the union's certification as the exclusive bargaining representative survives. The buyer cannot recognize a different union, deal directly with employees on mandatory subjects of bargaining, or take the position that the union is no longer the representative. The certification remains valid unless the union loses a decertification election or the buyer can establish a good-faith reasonable doubt of majority support based on objective evidence.
Grievances under the predecessor CBA: Even when a buyer is not bound to adopt the predecessor's CBA going forward, the buyer may be obligated to arbitrate grievances that arose under the predecessor's CBA if they relate to the predecessor's employees who were retained and the grievances concern conditions that occurred before the acquisition. The NLRB and federal courts apply a continuity analysis to determine which predecessor grievances survive the ownership change.
Substantial Continuity Test (Fall River)
Whether a buyer qualifies as a successor employer at all depends on the "substantial continuity" test established in Fall River Dyeing and Finishing Corp. v. NLRB, 482 U.S. 27 (1987). The Supreme Court held that the relevant inquiry is whether there is "substantial continuity" between the operations of the predecessor and successor from the perspective of the employees in the bargaining unit.
The substantial continuity inquiry examines multiple factors: whether the business of the two employers is essentially the same; whether the employees of the new company are doing the same jobs in the same working conditions under the same supervisors; whether the new entity has the same production process, the same customers, and the same location; and, most critically, whether a majority of the new employer's workforce was drawn from the predecessor's workforce at a representative point in time.
Fall River Substantial Continuity Factors
The Fall River decision also clarified that successorship can arise from a phased hiring process -- a buyer need not hire all employees on day one for successor status to attach. The NLRB will examine the composition of the workforce at a "representative complement" point, which is the time when the buyer has hired enough employees to be engaged in normal or substantially normal operations.
Asset Purchase vs. Stock Purchase Effects on CBA
The choice between asset purchase and stock purchase is among the most consequential decisions in a manufacturing acquisition involving a unionized workforce. The two structures produce categorically different outcomes with respect to CBA obligations, and the decision cannot be reversed after closing.
In a stock purchase, the buyer acquires the stock of the employing entity. The legal employer does not change -- the corporation or LLC that is party to the CBA continues as the employer of record. The CBA survives automatically. All CBA obligations -- wages, benefits, work rules, seniority rights, grievance procedures, and arbitration obligations -- continue without interruption. The buyer takes on all of the predecessor's labor obligations as they exist at closing, including any grievances pending under the CBA and any multiemployer pension obligations the predecessor had been contributing to.
In an asset purchase, the buyer is a new legal entity that was not a party to the CBA. The CBA does not transfer automatically. Whether the buyer assumes CBA obligations depends on the successorship analysis. An asset purchase buyer who properly qualifies as a Burns successor must bargain with the union but can set initial employment terms. An asset purchase buyer who qualifies as a perfectly clear successor must adopt the CBA. The asset purchase structure provides more flexibility but also more complexity and more legal exposure if the transition is not handled correctly.
CBA Treatment by Deal Structure: Summary
Stock Purchase:
CBA survives automatically. All CBA obligations transfer. No successorship analysis required. Union certification unaffected. Multiemployer pension contribution obligation continues. Pending grievances and arbitrations continue.
Asset Purchase (Burns Successor):
Buyer must recognize and bargain with union. Buyer may set initial terms if properly announced before job offers. CBA's specific terms do not automatically bind buyer. Multiemployer pension withdrawal liability may be triggered by seller's cessation of contributions. Pending grievances assessed on continuity basis.
Asset Purchase (Perfectly Clear Successor):
Buyer is bound to adopt predecessor's CBA. Buyer must recognize union. All CBA terms apply to buyer as if buyer had signed the agreement. Modification of terms requires bargaining to impasse or union agreement.
The broader framework for selecting between asset and stock purchase structures -- including tax implications, liability allocation, and transaction economics -- is covered in the asset purchase vs. stock purchase guide. In unionized manufacturing transactions, labor obligations are a significant factor in that analysis and must be integrated with the broader deal structure decision.
Successor's Right to Set Initial Employment Terms
The right to set initial employment terms is the primary practical benefit of asset purchase successorship over stock purchase in a unionized manufacturing deal. A buyer who properly preserves this right can begin the employment relationship on terms it has designed for its operating model, rather than inheriting the full cost structure of the predecessor's CBA.
Preserving the right to set initial terms requires specific steps in a specific sequence. Before any job offers are extended to the predecessor's employees -- and before the predecessor's employees have any basis for a reasonable expectation that their employment will continue on the same terms -- the buyer must communicate its intended changes. This announcement need not be exhaustive, but it must be sufficiently clear that no reasonable employee would expect to be retained under the predecessor's existing terms.
After the initial terms are set and employment begins, the buyer's obligation shifts. The buyer must bargain in good faith with the union over wages, hours, and working conditions. The initial terms set by the buyer are not permanent -- they are the starting point for bargaining. The union can propose changes, the buyer must respond in good faith, and the parties may ultimately reach a new CBA that replaces the buyer's initial terms. If bargaining reaches impasse after good-faith efforts, the buyer may implement its last best offer.
Coordinating with the seller: The seller's cooperation in the transition is important for preserving the buyer's right to set initial terms. The seller should not make representations to employees about continued employment on the same terms, and the transition announcement must be coordinated so that it reaches employees before job offers are extended. Purchase agreements in unionized manufacturing transactions typically include specific provisions about the seller's conduct during the transition period, including restrictions on labor communications that could affect successorship analysis.
Unfair Labor Practice Risk at Transition
The period between signing and closing in a unionized manufacturing acquisition is a particularly high-risk period for unfair labor practice exposure. Both the seller and the buyer can inadvertently create ULP liability through actions taken during the transition, and those liabilities can be assessed jointly or severally against both parties depending on the nature of the conduct and the timing.
For the seller, maintaining the status quo on mandatory subjects of bargaining during the transition period is required unless the union agrees otherwise. Implementing changes to wages, benefits, or working conditions without bargaining during the pendency of the sale -- even as a cost-reduction measure intended to benefit the buyer -- is a ULP. Sellers should also avoid making statements about post-close employment conditions that could commit the buyer to specific terms or create a perfectly clear successor situation without the buyer's knowledge.
For the buyer, the primary pre-close ULP risk comes from engaging with employees in ways that could constitute unlawful direct dealing or interfering with union representation rights. A buyer that begins negotiating directly with employees during due diligence, makes promises about post-close terms, or takes actions designed to undermine the union's majority status before the deal closes may have committed a ULP against the predecessor's bargaining unit.
Post-close unilateral changes: After a successful asset purchase where the buyer has set initial terms and is bargaining with the union, the buyer cannot unilaterally change any mandatory subject of bargaining after the initial terms take effect without first bargaining to impasse with the union. Implementing changes to health insurance, shift schedules, overtime policies, or disciplinary procedures without bargaining is a ULP even if those changes are permitted under the buyer's initial term announcement.
Effects bargaining obligation: Even when a buyer is not a successor and has no obligation to adopt the predecessor's CBA, the buyer may have an independent obligation to bargain with the union over the effects of the acquisition on bargaining unit employees if the acquisition results in layoffs, relocation, or significant changes to working conditions. Effects bargaining is a mandatory subject and failure to bargain over effects -- as opposed to the decision itself -- is a ULP.
Remedies for ULPs: NLRB remedies for successorship-related ULPs typically include a bargaining order (requiring the employer to recognize and bargain with the union), make-whole relief restoring employees to their prior CBA terms from the date of the refusal to bargain, and back-pay liability for wages lost as a result of the ULP. In cases involving clear violations, the NLRB may also seek interim bargaining orders in federal court under Section 10(j) of the NLRA.
Pension Withdrawal Liability Under MPPAA
Multiemployer pension withdrawal liability is, in many manufacturing M&A transactions, the single largest quantified labor liability exposure. The Multiemployer Pension Plan Amendments Act of 1980 (MPPAA) amended ERISA to impose withdrawal liability on contributing employers who exit multiemployer pension plans, either through a complete withdrawal (permanent cessation of contribution obligations) or a partial withdrawal (significant reduction in contributions).
The MPPAA withdrawal liability mechanism is designed to ensure that employers cannot shed their share of a plan's unfunded vested benefits by simply stopping contributions. When an employer withdraws, the plan's trustees calculate the employer's allocable share of the plan's unfunded vested benefits using one of several ERISA-prescribed allocation methods. The most common method is the proportional method, which allocates unfunded benefits based on the employer's share of total employer contributions over a multi-year base period.
In a manufacturing acquisition, the triggering question is whether the transaction constitutes a "change in the obligation to contribute" that triggers a withdrawal. In a stock purchase, there is typically no withdrawal -- the employer of record continues, its obligation to contribute continues, and the plan sees no change. In an asset purchase, the seller's cessation of operations at the acquired location may trigger withdrawal liability against the seller for its allocable share of the plan's unfunded benefits.
MPPAA Withdrawal Scenarios in M&A
Multiemployer Plan Diligence and Carve-Outs
Quantifying multiemployer pension exposure requires information that the seller may not readily have. The plan's unfunded vested benefit liability is an actuarial calculation performed by the plan's actuaries, not the seller's accountants. Buyers must request this information specifically and must understand what they are receiving.
Under ERISA, a contributing employer has the right to request a copy of the plan's actuarial reports, the plan's annual report (Form 5500), and a notice of critical or endangered status if the plan is certified in such a zone. These documents provide the framework for understanding the plan's funded status, but they do not by themselves tell the buyer what its withdrawal liability exposure would be. For that calculation, buyers typically retain independent actuaries to estimate the seller's allocable share based on the plan's most recent data.
In purchase agreement negotiations, buyers have several options for addressing multiemployer pension exposure. A price reduction or escrow can account for estimated withdrawal liability if the buyer will not assume the contribution obligation. A seller indemnification obligation for withdrawal liability assessed against the buyer within a specified period after closing can shift the risk. A condition precedent requiring the seller to obtain a plan actuarial certification of the estimated withdrawal liability before closing can ensure the buyer has accurate information before committing to the deal.
Critical and endangered status zones: ERISA requires multiemployer plans to notify contributing employers annually if the plan is certified in critical status (the "red zone") or endangered status (the "yellow zone"). Plans in critical status are severely underfunded and are operating under a rehabilitation plan that may include benefit reductions and surcharges on contributing employers. A target company contributing to a red zone plan may have significantly higher pension exposure than the contribution levels suggest. Buyers must specifically inquire about and obtain all zone status notices provided to the seller.
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WARN Act Interplay with Union Deals
The Worker Adjustment and Retraining Notification Act requires employers with 100 or more employees to provide 60 days' advance written notice before a plant closing or mass layoff. WARN applies to unionized and non-union workforces alike. In a union deal, WARN interacts with independent CBA obligations to create a layered notice and severance framework that buyers must understand before planning any post-close workforce reductions.
A plant closing under WARN occurs when a single employment site is shut down permanently or temporarily for more than six months, resulting in employment loss for 50 or more employees during any 30-day period. A mass layoff under WARN occurs at a single site when employment loss affects either 500 or more employees, or 50-499 employees constituting at least 33 percent of the total active workforce at the site, during any 30-day period.
WARN notice must be provided to: (1) the affected workers or their union representatives; (2) the state dislocated worker unit designated under the Job Training Partnership Act; and (3) the chief elected official of the local government in which the employment site is located. Notice to the union satisfies the notice obligation to the bargaining unit employees in a union deal, but the union representative receives the notice as an agent for the workers, not as a substitute for individual notice in cases where WARN requires individual notice.
WARN Act Allocation in Unionized M&A Transactions
The broader due diligence framework for manufacturing acquisitions -- including WARN Act analysis, environmental liability assessment, and equipment evaluation -- is covered in the M&A due diligence guide. Labor due diligence should be integrated with the broader diligence process rather than treated as a separate exercise.
Reps and Warranties for Labor Matters
The labor representations and warranties in a manufacturing purchase agreement are among the most consequential provisions in the document. Inadequate labor reps leave the buyer without contractual recourse for labor liabilities discovered after closing. Overly broad reps that the seller cannot honestly make may kill the deal or result in negotiation friction at a late stage.
The purchase agreement should contain representations covering the full landscape of labor obligations. CBA identification reps should require the seller to list all collective bargaining agreements, including expired agreements that may still be operative pending negotiations, and to represent that there are no side letters, MOUs, or other labor agreements that are not listed. Status reps should confirm that the seller is in material compliance with all CBA obligations and that there are no pending or, to the seller's knowledge, threatened grievances or arbitrations that could result in material liability.
Labor Representations Checklist for Manufacturing Acquisitions
- ✓Complete identification of all CBAs, including expiration dates, automatic renewal provisions, and any pending reopener negotiations
- ✓Material compliance with all CBA terms, including wages, benefit contributions, seniority provisions, and disciplinary procedures
- ✓No pending unfair labor practice charges with the NLRB and no charges threatened to the seller's knowledge
- ✓No active strikes, work stoppages, slowdowns, or lockouts; no such actions threatened
- ✓Complete identification of all multiemployer pension plan contribution obligations, including plan name, funded status, and most recent withdrawal liability estimate if available
- ✓No withdrawal liability assessed against the seller and no events that would trigger withdrawal liability as a result of the transaction
- ✓WARN Act compliance with respect to any pre-closing employee separations that occurred within 90 days before closing
- ✓No union organizing activity, card campaigns, or representation petitions pending that have not been disclosed
- ✓No pending arbitration proceedings under existing or expired CBAs
- ✓No collective bargaining sessions scheduled or demanded that have not been disclosed to the buyer
The indemnification framework for labor reps is as important as the reps themselves. A seller indemnification obligation for breaches of labor representations should have a survival period that extends beyond the CBA's term -- grievances and arbitration claims can be asserted months or years after closing. Buyers should also consider whether to negotiate specific indemnification provisions for multiemployer pension withdrawal liability, given that withdrawal liability may not be determinable until after the plan's trustees conduct their assessment.
The broader indemnification structure for manufacturing acquisitions is addressed in the indemnification provisions guide. Non-compete provisions that may affect the seller's former employees are covered in the non-compete agreements guide.
Post-Close Labor Integration Considerations
Closing day in a unionized manufacturing acquisition is the beginning of a labor integration process that will last for months or years. Buyers who approach post-close integration without a clear labor strategy often find themselves in reactive mode -- responding to union demands, grievance filings, and ULP charges rather than implementing an operational plan.
The first 30 days after closing are particularly important. If the buyer is a successor employer who has set initial terms, the obligation to bargain with the union is active from the first day of operations. The buyer should designate a lead labor relations negotiator, notify the union formally of its recognition and its intent to bargain, and begin the bargaining process with a clear understanding of its target outcomes and its BATNA (best alternative to a negotiated agreement).
Operational changes that constitute mandatory subjects of bargaining cannot be implemented unilaterally during the bargaining period. Buyers who want to change shift schedules, modify attendance policies, restructure benefits, or change production processes must bargain with the union over those changes before implementing them. Unilateral implementation of mandatory subjects is a ULP that can result in a return to the status quo, back-pay liability, and a bargaining order.
CBA renegotiation timeline: If the buyer has set initial terms and is bargaining for a new CBA, the timeline to reach agreement can be 6-18 months or longer. During this period, the buyer's initial terms are operative for mandatory subjects, but the union may file grievances asserting that the buyer's initial terms violate commitments made in pre-hire communications or that they fail to meet the minimum requirements of applicable law. Buyers should budget for an extended bargaining period and for the possibility of interim arbitration proceedings.
Integrating acquired employees into existing CBA: When a buyer acquires a new plant with a different CBA and already has an existing CBA at another facility, the question of whether the acquired employees should be integrated into the existing bargaining unit requires analysis. The NLRB's criteria for accretion (addition to an existing unit) require a showing that the acquired employees share an overwhelming community of interest with the existing unit. If accretion does not apply, the acquired employees may form their own bargaining unit with different terms, which creates operational complexity for the buyer.
Grievance handling infrastructure: Buyers must establish a grievance handling process from the first day of operations. The CBA's grievance procedure sets deadlines for responding to grievances at each step of the process. Missing a grievance deadline can result in the grievance being sustained by default or waiving arguments that would otherwise be available at arbitration. Buyers should designate a labor relations manager responsible for grievance tracking and response from day one.
The deal structures that govern the acquisition mechanics -- including earn-out provisions, transition services agreements, and post-close operational covenants -- are covered in the M&A deal structures guide. For buyers acquiring manufacturing businesses in Michigan specifically, the Michigan manufacturing M&A page provides regional context on automotive supplier transactions and the specific diligence requirements common in the Michigan manufacturing market.
Acquiring a Unionized Manufacturing Business?
Acquisition Stars works with manufacturing buyers on CBA successorship analysis, multiemployer pension withdrawal liability quantification, WARN Act compliance, and labor representation negotiation in purchase agreements. Alex Lubyansky handles each engagement directly. Submit your transaction details to begin the engagement assessment process.
Frequently Asked Questions
Does the buyer automatically inherit the CBA?
Not automatically. In a stock purchase, the CBA survives because the legal employer does not change. In an asset purchase, whether the buyer inherits the CBA depends on successorship doctrine. A Burns successor must bargain with the union but may set initial terms. A perfectly clear successor must adopt the predecessor's CBA. A buyer who hires a new workforce without retaining predecessor employees may not be a successor at all. The outcome depends on the specific facts of the transaction and the hiring process.
What is a perfectly clear successor?
A perfectly clear successor is a buyer who either hires all or substantially all of the predecessor's employees without announcing intent to set different employment terms, or makes job offers that create a reasonable expectation of continued employment on the same terms. The perfectly clear successor exception to Burns requires the buyer to adopt the predecessor's CBA. To avoid this outcome, the buyer must announce intended changes to employment conditions before extending job offers and before employees develop expectations of retention on existing terms.
Can the buyer renegotiate the CBA?
A Burns successor who properly preserves the right to set initial terms may operate under different conditions than the predecessor's CBA and is not bound to those specific terms. The buyer must bargain in good faith with the union and may implement a last best offer after good-faith bargaining to impasse. A perfectly clear successor bound to the predecessor's CBA may modify CBA terms only through bargaining with the union or by waiting until the CBA's expiration date, then bargaining for a new agreement.
What is multiemployer withdrawal liability?
Multiemployer withdrawal liability under MPPAA is assessed when an employer permanently ceases to contribute to a multiemployer pension plan. The plan's trustees compute the withdrawing employer's allocable share of the plan's unfunded vested benefits and issue an assessment. In an M&A transaction, the seller's asset sale may trigger the seller's complete withdrawal; the buyer who assumes the contribution obligation avoids triggering a separate withdrawal. Buyers must quantify this exposure in diligence and allocate it properly in the purchase agreement.
Does WARN apply in union deals?
Yes. WARN applies to all employers with 100 or more employees, regardless of union status. In a union deal, WARN notice to the union representative satisfies the notice obligation to bargaining unit employees. However, the CBA may impose additional and longer notice obligations, and the union may have independent rights to bargain over the decision and effects of any layoff or plant closure. Buyers planning post-close workforce reductions must analyze both WARN and CBA obligations before implementing any changes.
How does asset vs. stock purchase affect the CBA?
In a stock purchase, the CBA transfers automatically because the legal employer is unchanged. All CBA terms, grievances, and pension contribution obligations continue. In an asset purchase, the CBA does not transfer automatically. The buyer may be a Burns successor (must bargain, may set initial terms) or a perfectly clear successor (must adopt the CBA), depending on how the hiring process is handled. The asset purchase provides more structural flexibility but requires careful execution to preserve that flexibility.
What labor reps belong in the purchase agreement?
The purchase agreement should represent: all CBAs and their current status; material CBA compliance; no pending ULP charges; no active or threatened work stoppages; all multiemployer pension plan obligations and their funded status; no pending withdrawal liability; WARN compliance for pre-close layoffs; no undisclosed grievances or arbitrations; and no undisclosed organizing activity. Inadequate labor representations leave the buyer without contractual recourse for labor liabilities that emerge after closing.
Can the buyer refuse to hire union employees?
A buyer may establish its own hiring criteria and staffing levels, but cannot refuse to hire applicants because of their union membership or specifically to avoid successorship obligations. A buyer who hires an entirely new workforce without retaining predecessor employees is generally not a successor. However, hiring decisions designed specifically to circumvent successor status may be found an unfair labor practice by the NLRB. The buyer's hiring practices must be based on legitimate business criteria, not on union avoidance.
Complete the Manufacturing M&A Legal Framework
Union CBA successorship is one component of the complete legal framework for manufacturing acquisitions. Review the related guides for full coverage.
Related Resources
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