Why reward due diligence is critical to deal success in M&A

Ever been through a merger, takeover or acquisition and found that things are not as straightforward as they seemed? The legal and financial due diligence was great, but the people and especially the reward due diligence was somewhat lacking?

When you buy or merge a business, you are not just buying assets and revenue streams - you are buying people, promises and liabilities that sit inside reward structures. Done well, reward due diligence protects enterprise value; done badly, it can quietly erode the whole point of the deal through unexpected costs, talent loss and cultural friction.

So what should you think about before, during and after a transaction from a reward perspective - and how can Reward Heads support to protect and unlock value - or even give you some food for thought about whether you progress the transaction or not and on what terms.

Before the deal: seeing the real people cost

Pre-signing, the priority is to understand what you are actually buying in terms of workforce, reward and risk - and how that interacts with the deal thesis. This is much more than a quick look at payroll; it is about surfacing liabilities, pressure points and misalignments that can derail the business case later.

We would typically explore:

• Deal thesis and operating model - Clarify whether the deal is about growth, capability, cost synergy, talent, technology or market access, because reward structures must ultimately support that aim. If you are bonusing on sales but the transaction is all about profit, you’ve got a mismatch straightaway.
• Critical red flags - Underfunded pensions, National Minimum Wage compliance exposure, large change-in-control (CIC) payouts, unfunded bonus liabilities, significant contractor misclassification, union or works council constraints and significant pay inequities can all materially change the economics of the deal.
• Workforce and leadership profile - Understand where critical skills sit, who holds key client and operational relationships, where leadership dependence is high, and how vulnerable the business is to flight risk.

This is where Reward Heads helps investors and acquirers translate deal strategy into a clear people and reward risk view, so you know which issues are "price it in", "walk away" or "fix in integration".

During diligence: getting into the reward detail

Once the strategic context is clear, you need a structured, forensic review of reward, benefits and workforce cost. The aim is not to drown in data, but to pinpoint what could surprise you later - financially, legally or culturally.

We would typically explore:

• Compensation structures - Review base pay, job architecture and market positioning for competitiveness, compression and internal equity, especially for critical and executive talent. Short- and long-term incentives then need reviewing for alignment to business goals, cost volatility, change-of-control impacts, and risks such as guaranteed bonuses and single-trigger acceleration.
• Executive packages and governance - Analyse executive contracts, severance, golden parachutes, deferred compensation and board documentation to identify "double dip" risks, automatic payouts and investor sensitivity.
• Benefits and pensions - Quantify pension and benefit liabilities, including underfunded DB schemes, legacy obligations, healthcare cost trajectories and holiday or other time off accruals that sit on the balance sheet.
• Employment contracts and legal obligations - Map change-of-control provisions, TUPE exposure, notice periods, collective agreements and works council requirements so you understand the consultation, timing and cost implications of any post-deal change.
• Workforce cost and data quality - Build a robust baseline of labour cost (employees, taxes, benefits, incentives, contractors) and test HR/Payroll data quality so that synergy and integration models rest on solid foundations.

Reward Heads uses a M&A Reward Due Diligence Checklist to structure this work, quantify the financial exposure and convert findings into clear heatmaps, executive summaries and deal-adjusted forecasts that Boards and Investment Committees can act on.

Around signing and pre-close: securing key talent and Day 1 continuity

As the deal moves towards signing and completion, the focus shifts to retention, continuity and credibility. This is where good reward planning often makes the difference between a smooth Day 1 and a destabilising shock.

Reward Heads would work with clients to explore:

• Retention of critical talent - Identify high-flight-risk and integration-critical groups, understand their market position and design targeted retention interventions such as retention bonuses, equity, guarantees or accelerated development.
• Change-of-control and transaction costs - Firm up the full schedule of CIC triggers, transaction bonuses, retention plans, equity acceleration and severance so finance has a realistic view of deal and post-deal payroll costs.
• Day 1 readiness - Ensure payroll and benefits run smoothly on Day 1, reporting lines and reward decision rights are clear, and key leaders are ready to communicate what is changing, what is not, and what that means for people’s pay and benefits.

Reward Heads can act as a bridge between HR, Finance, Legal and the deal team, translating technical reward detail into clear decisions on who to protect, which commitments to honour, and where to draw a firm line to avoid setting unhelpful precedent.

Post-close: harmonising, integrating and protecting culture

Once the deal completes, the temptation is to rush straight into harmonisation - but poorly planned changes to reward can drive attrition, claims and cultural damage. A phased, evidence-based approach is far more effective.

Post-close focus areas usually include:

• Stabilisation (First 100 days) - Maintain reward continuity, reassure employees on pay and benefits, reinforce leadership alignment and deal with any urgent anomalies or quick wins.[2]
• Reward harmonisation - Plan the alignment of salary structures, incentives, benefits and executive reward between legacy and acquired organisations, including the cost, phasing, and "which philosophy prevails" questions.
• Job architecture and organisation design - Map roles, levels and structures across entities to support a coherent future-state organisation, avoiding grade inflation, duplication and leadership overlap.
• Pay equity and compliance - Review gender pay, equal pay, minimum wage and local labour laws and compliance to surface litigation and regulatory risk, especially where different legacy policies meet.
• Culture and reward philosophy - Assess how each organisation thinks about performance, risk, hierarchy and recognition, then design a reward model that reinforces the desired culture rather than importing unhelpful habits.

Reward Heads uses a clear checklist to build a practical integration roadmap - covering Day 1 actions, first 100 days, and longer-term harmonisation - with a clear view of cost, risk and people impact at each step.

Why bring in Reward Heads?

Most deal teams know they have "people risk", but they rarely have the time or specialist reward expertise to quantify it, join the dots and turn it into decisive action. An independent reward consultancy adds the most value when it can link seemingly technical issues (pension funding, incentive plan clauses, pay equity, IR35 exposure) directly to enterprise value and integration success.

Reward Heads helps investors and acquirers to:

• Quantify reward-related deal risks, liabilities and one-off costs.
• Connect talent and culture issues to the core deal thesis and synergy model.
• Design targeted retention strategies for critical talent and leadership.
• Model integration and harmonisation costs and avoid expensive surprises.
• Align incentives, governance and reward philosophy with the future-state organisation.
• Help you confirm your decision to proceed as independents with no ‘skin in the game’

If you would like to explore how Reward Heads can help you protect deal value through people and reward insight, please contact rewardsolutions@rewardheads.co.uk to arrange a chat.

Victoria Milford, CEO, Reward Heads