How to Retain Your Best People Through Any M&A Deal

The deal closes. The press release goes out. The board is satisfied. And then, quietly, the talent begins to leave. According to EY research, 47% of employees depart within the first year of an acquisition and 75% are gone within three years; running at more than three times the normal voluntary turnover rate. The employees most likely to exit are the high performers with options—precisely the people the acquiring organization paid a premium to access. Culture and people, not financial models or operational synergies, are where most mergers either deliver their value or quietly forfeit it.

Members of the Senior Executive HR Think Tank, a curated group of human resources leaders, executives and organizational strategists, have navigated acquisitions across industries and company sizes. Their strategies converge on a shared conviction: Integration cannot be an afterthought. The people decisions made in the first weeks of a transition determine whether the combined organization retains what made the deal valuable—or spends years rebuilding it.

A study by Instill found that up to 60% of M&A failures after closing can be traced to cultural misalignment, and Bain & Company’s research puts the proportion of acquirers facing significant cultural challenges at 75%. The financial cost is measurable too: Replacing a key employee can run between 50% and 200% of their annual salary, and that is before factoring in lost institutional knowledge, disrupted client relationships and the cascade of departures that often follows the first high-profile exit.

“Neither culture will be the same post-merger. Let both entities know what is possible to retain and what will change.”

– John Cleveland, a Human Resources Start Up Advisor

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Name What Will Change and What Won’t

Before strategy, before structure, before any retention conversation, John Cleveland, a Human Resources Start Up Advisor with decades of HR leadership experience, makes a foundational point that is easy to skip and costly to ignore: Employees need to know the truth about what is actually happening to them.

“One needs to acknowledge that there will be change,” Cleveland says. “Neither culture will be the same post-merger. Let both entities know what is possible to retain and what will change.”

His observation cuts through the language organizations often reach for in these moments—the corporate vocabulary of M&A. When one company purchases another, the acquired organization’s employees deserve clarity, not euphemism.

“I love ‘harmonizing’—that is corporate speak for ‘you will adopt the purchasing company’s policies,'” Cleveland adds, with the candor of a seasoned HR advisor. The practical implication for HR leaders: If you know what will change, name it. If you know what will be preserved, say so explicitly. Uncertainty is not neutral—it drives away exactly the people who have the most options.

“Blending cultures isn’t about forcing a superficial compromise. It requires integrating the highest-performing behaviors from both sides into a single, practical operating system. ”

– Michael D. Brown, Senior Managing Partner at Global Recruiters of Buckhead

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Conduct a Clinical Talent Audit Before the Integration Begins

Most M&A integration plans start with org charts. Michael D. Brown, Senior Managing Partner at Global Recruiters of Buckhead—a Forbes Top 25 Professional Search and Top 20 Executive Search firm that helps ambitious companies attract and retain game-changing talent, ranked for its proprietary Unlocking & Unleashing Talent Methodology—has seen this starting point repeatedly fail organizations. His prescription is more rigorous.

“Most M&A integrations fail because leadership prioritizes administrative harmony over revenue continuity,” Brown says. “Consider the reality: Approximately 87% of companies already struggle with talent retention during normal operations. Add the chaos of an acquisition, and you risk losing the people who make the deal valuable.”

His approach begins with a clinical audit—a deliberate effort to look beyond the formal org chart and identify the true top performers who drive the business. Generic retention bonuses, he contends, are not enough.

“You cannot retain these critical players with generic, temporary bonuses,” Brown adds. “We transparently map their future career paths, aligning their personal goals directly with the new enterprise objectives. Blending cultures isn’t about forcing a superficial compromise. It requires integrating the highest-performing behaviors from both sides into a single, practical operating system. Direct communication eliminates uncertainty and keeps teams focused on execution.”

Eliminate Ambiguity Before Talent Walks

The integration checklist that most companies build for a merger is heavy on financial performance, product roadmaps and executive leadership logistics. Lauren Francis, Founder and CEO of Mulberry Talent Partners—a Portland-based recruiting firm with more than 10,000 placements over a 25-year career, specializing in HR, professional office, finance, operations and project management roles—has watched this prioritization gap produce predictable consequences.

“During a merger and acquisition, product roadmaps, financial performance and executive leadership responsibilities are often prioritized,” Francis says. “While those aspects of the business are critically important, companies should develop and execute an integration plan across all aspects of the companies. Culture, HR policies, career paths and evaluation metrics are critically important to ensure continued strong performance by teams.”

Her diagnosis of where talent loss originates is precise: “It is in the ambiguity where issues—and problems—arise. One cannot assume that staff will be patient and wait.” The solution is proactive communication that reaches well below the senior leadership tier.

“Communicating with transparency enhances trust, creates ownership and provides grace for when things may change or be delayed,” Francis adds. “Long-term retention does not come from bonuses—it comes from respect, belief and buy-in.” The distinction matters practically: Financial incentives can delay departure, but they cannot build the conviction that makes employees choose to stay.

Communicate First, Then Co-Create The Culture

The strategic sequencing of an M&A integration—what to do first, what to do second, what to build together—matters as much as any individual action. Tyler Crebar, Founder and CEO of Crebar Career Consulting—a career strategy and recruiting firm built on firsthand recruiting experience at JPMorgan Chase, LinkedIn and the NCAA—offers a sequenced approach grounded in both the talent and culture dimensions of integration.

“The top priority is clear, frequent and transparent communication about what is changing, what is staying the same, and what employees can expect throughout the transition,” Crebar says. “At the same time, HR should identify critical talent early and have proactive retention conversations focused on career growth, leadership opportunities and long-term fit within the combined organization.”

On culture, his perspective challenges one of the most common—and most damaging—assumptions organizations bring to integration: that the acquiring organization’s culture should simply prevail. “I think it’s a mistake to assume one organization’s culture should simply replace the other’s,” Crebar notes. “The most successful integrations take time to understand the strengths of both cultures and intentionally build a shared future state.”

“HR should gather employee feedback, involve leaders from both organizations in shaping the new culture and clearly define the behaviors and values that will drive success moving forward,” Crebar adds. “Ultimately, employees are more likely to stay when they feel informed, valued and included in the process.”

Map the Invisible Network and Protect Cultural Linchpins

Org charts show hierarchy. They do not show influence. Volen Vulkov, Co-Founder of Enhancv—a career platform that helps professionals tell their story with clarity and confidence, whose insights on the job market have been cited by institutions including the Thunderbird School of Management and the University of Miami—offers one of the most operationally distinct recommendations in this article.

“Look past the formal hierarchy and map the ‘invisible neural network,'” Vulkov says. “Use organizational network data to identify the shadow anchors—the employees others naturally turn to for venting, comfort or unwritten guidance.”

The employees who surface through this lens are not always the ones with the largest titles or compensation packages. They are the people whose presence holds the informal culture together—who others seek out when they are anxious about change, when they need to understand how things really work or when they need a trusted voice to interpret leadership signals.

“Quietly protect and insulate these cultural linchpins first,” Vulkov adds. “Secure the emotional heart of the floor, and the critical tech talent will stay.” The insight is counterintuitive but behavioral: When the people who anchor informal culture feel seen and secure, their presence signals to the rest of the organization that things are manageable—and that signal travels faster than any all-hands communication.

“Positively implement the new way of doing things, blended with the policies and procedures that have worked well in the past.”

– Dr. Tish Hodge, PHR, Founder of The Shine Institute

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Take The Blended-Family Approach

Dr. Tish Hodge, PHR, Founder of The Shine Institute—dedicated to human development and leadership growth—reaches for an analogy that cuts through the complexity of M&A integration with clarity: A merger is like a blended family, complete with established habits, prior loyalties and inherited ways of doing things. Her three-step framework reflects that reality.

“As the new executive in the newly acquired space, I schedule one-on-ones with everyone on the payroll, if even just for 15 to 20 minutes,” Dr. Hodge says. “This allows me to connect, begin a professional relationship, learn what works well and understand what that employee’s expectations are.”

The second element—recognition—addresses a behavioral reality that is easy to overlook during a transition focused on operational logistics. “Implement monthly recognitions, and curate an atmosphere of winning,” she recommends. “We hear enough negative messages on the news, so a key in keeping great talent is to celebrate their successes.”

“Positively implement the new way of doing things, blended with the policies and procedures that have worked well in the past,” Dr. Hodge adds. “The listening sessions coupled with mingling the old and new policies lay a foundation of win-win. Employees do not really care what you know, or how things are going to be, until they know how much you care. That is why recognition matters.”

Protect Institutional Memory by Making People Visible

When Dr. Curtis Odom, Managing Partner of Prescient Strategists—a consultancy that helps organizations build the human capabilities required for AI investments to generate lasting value, with frameworks active across healthcare, financial services, manufacturing and professional services—and Executive Professor of Management and Organizational Development at Northeastern University’s D’Amore-McKim School of Business, distills his M&A framework, it runs six actions, each tight and sequenced with the precision of a consultant who has seen what happens when organizations skip steps.

“Communicate intent transparently,” Dr. Odom says. “People need clarity on the strategic rationale and their role in the combined organization. Assess both cultures honestly—blend the best elements rather than forcing assimilation. Leadership must align on non-negotiables.”

His framework then moves from communication to identification to measurement: Map critical roles immediately, conduct pulse surveys continuously and track sentiment as culture forms in real time. The point on institutional memory is where he most sharply characterizes what organizations consistently underestimate.

“Protect institutional memory,” Dr. Odom says. “Identify those who understand both business and culture—their departure during transition cascades organizational risk.” He believes that: “Acquisitions fail when people feel invisible. Make them visible. Invest in clarity, voice and future opportunity.”

Replace Assimilation With Respectful Synthesis

The language Dr. Jonathan H. Westover uses for M&A integration is intentional: not uniformity, not assimilation—synthesis. Dr. Westover, Associate Dean and Director of HR Programs at Western Governors University, Founder and CEO of Human Capital Innovations—a global leadership consulting and coaching firm—and Chief Workforce and Learning Officer at Future State University, brings two decades of cross-sector organizational consulting to a framework that is both structured and humane.

“During M&A, I prioritize transparent communication from day one,” Dr. Westover says. “I meet with key talent individually to understand their concerns and career aspirations, demonstrating their value to the combined organization. I conduct rapid cultural assessments of both companies, identifying core values worth preserving and potential friction points.”

His retention strategy covers three tracks: competitive stay bonuses, clear career pathing in the new structure and early role clarity to reduce uncertainty. He also establishes cultural integration teams with representatives from both sides—a structural choice designed to ensure that unified policies are co-created rather than imposed.

“Quick wins matter,” Dr. Westover adds. “I maintain popular benefits and traditions from both organizations where possible. Regular pulse surveys track sentiment throughout integration, allowing real-time adjustments. The goal isn’t perfect uniformity—it’s respectful synthesis that keeps critical talent engaged while building something stronger together.”

Listen Before You Integrate

One strategic error Nicole Cable, Chief People and Experience Officer and founder of her own human experience consultancy—who works with C3 Health, a healthcare organization delivering integrated care solutions to improve patient outcomes and reduce operational strain—has witnessed in acquisitions is not a failure of planning. It is a failure of listening.

“The biggest mistake organizations make during an acquisition is assuming culture will naturally blend,” Cable says. “It won’t. My strategy is to listen before I integrate. That means understanding what employees value, what is working well, what they fear losing and where the two organizations share common ground.”

Her account of what drives retention is not primarily financial: “People don’t resist change as much as they resist uncertainty.” The solution is to maintain transparency about what is changing, what is not and when decisions will be made, which creates the conditions for employees to choose to stay rather than to wait and see.

“Identify key talent early, involve them in the transition and create opportunities for them to help shape the future organization,” Cable adds. “The goal isn’t for one culture to win. The goal is to intentionally build a stronger culture that honors the best of both organizations while keeping people at the center of every decision.”

Understand the Workforce Before You Implement Change

Britton Bloch, VP of Global Talent Acquisition Strategy and Head of Recruiting at Navy Federal Credit Union, anchors her M&A framework in a sequencing principle that is easy to bypass under the time pressure of an integration: Understand before you act.

“Successful culture integration and talent retention begin with understanding the acquired workforce before implementing change,” Bloch says. “Organizations should conduct on-site listening sessions with employees at all levels early in the transition to identify concerns, understand cultural strengths, surface potential risks and gain insight into what employees value most about their organization.”

The intelligence gathered through those sessions, she emphasizes, should directly inform what comes next—not become a report that sits unused while integration proceeds according to a pre-built plan. “These insights should inform integration planning, communication strategies, leadership engagement and retention actions for critical talent,” she notes.

“Effective acquisitions recognize and preserve cultural elements that contribute to performance, engagement and organizational identity,” Bloch adds. “A thoughtful, employee-centered integration approach minimizes disruption, strengthens retention and accelerates successful assimilation into the combined organization.” The discipline is in the sequencing: Listen first, then plan.

Build a Third Culture

The framing most organizations bring to culture integration is competitive: which side’s values prevail, which practices survive, which policies take precedence. Christopher Bylone, Principal Strategist and Founder of Innovation Unbiased—a strategic consultancy that transforms workplace culture through data-driven, people-centered strategies and host of the podcast “I Know I Belong When…”—rejects that frame entirely.

“Most integration playbooks ask which culture wins. That is the wrong question,” Bylone says. “You acquired a company for the value its people created. Absorb that culture and you keep the headcount while you lose the reason you paid the premium.”

His alternative is structural rather than merely philosophical. The task is to audit both cultures, identify what excites people—and builds trust in each—and carry those elements forward explicitly so the people who built them know their contribution has standing in the new organization. Then sunset what has not been working in either, without nostalgia.

“The reframe is simple: You are not choosing a winner,” Bylone adds. “You are auditing two cultures and designing a third that carries the best of each forward. People do not stay because you promised them nothing would change. They stay because they know where they stand and see their work carried into the new design. That is belonging as a structural outcome.”

Your M&A People Playbook: What to Do Before, During and After Close

The following insights, one drawn from each Think Tank member, offer a practical integration framework for HR leaders navigating the human side of a deal.

• Be honest about what will change—and stop reaching for euphemisms. Tell both workforces what is being preserved and what is not; the clarity is uncomfortable, but the ambiguity is more expensive. 
• Conduct a clinical talent audit that looks past the org chart. Identify the true top performers who drive business value, map their career paths into the new structure and begin those conversations before the informal job market does. 
• Build a full integration plan that reaches all employees, not just senior leaders. Culture, HR policies, career paths and evaluation metrics all need clarity across the workforce—the ambiguity that comes from plans designed only for leadership is where talent loss begins. 
• Sequence communication before culture-building. First, tell employees what is changing and what is not. Then involve leaders from both sides in co-creating the values and behaviors that will govern the combined organization. 
• Map the organizational network and protect the informal cultural anchors. Use network data to identify the employees others turn to for unwritten guidance and emotional grounding—protect those people first and the rest of the retention strategy becomes easier. 
• Hold individual listening sessions with every employee. One-on-ones of 15 to 20 minutes build more relationship capital and trust than any town hall, and the intelligence they surface cannot be gathered any other way. 
• Protect institutional memory as a strategic asset, not a soft concern. The people who understand both the business and the culture are the ones whose departure cascades organizational risk—identify them, map their future and make them visible. 
• Establish integration teams that co-create policy rather than impose it. Cross-organizational integration teams, supported by pulse surveys and real-time sentiment data, produce unified cultures that both workforces own rather than comply with. 
• Listen before you act—and let listening genuinely change the plan. On-site listening sessions at all levels, early in the transition, surface the cultural strengths worth preserving and the risks worth addressing before they drive departures. 
• Understand the workforce before implementing change, and let the intelligence drive the strategy. The insights gathered from listening sessions should directly shape integration planning, communication and retention actions—not sit unused while a pre-built plan proceeds. 
• Stop trying to pick a winner. Design a third culture instead. Audit both organizations for what excites people and builds trust; carry those elements forward explicitly and sunset what has not worked in either—then tell both workforces what you are doing and why. 

The Deal Is the Beginning, Not the End

Every M&A transaction closes with a financial model. Few close with an equally rigorous people model. The research is unambiguous about the consequences: when talent retention and culture integration are treated as secondary to operational and administrative integration, organizations lose the people who made the deal worth doing in the first place. The cost is not just the replacement salary. It is the institutional knowledge, the client relationships, the informal networks and the cultural credibility that walk out with every departure.

The HR leaders who protect value through acquisitions share a common orientation: they treat the people side of a deal with the same analytical rigor they would apply to a financial model. They audit talent before acting on org charts, listen before communicating and design new cultures deliberately rather than letting assimilation happen by default. The organizations that get this right do not just avoid talent attrition—they build something from the combined workforce that neither entity could have built alone.