Employee Anxiety in Company Mergers and Acquisitions: A Guide for Employers

Why do company mergers and acquisitions cause anxiety in employees? Practical advice for employers on managing uncertainty and preventing the loss of talent.

One morning, employees learn from the news or from an internal announcement that their company has been bought by a bigger group. The announcement has promising phrases such as "joining forces", "a growth journey" and "synergy". But what people say in the corridors is different: "Will our department be closed?", "Who will the new manager be?", "Will our length of service be protected?" However well a company merger or acquisition is planned financially and strategically, it can struggle to deliver the expected value when the human side is neglected. The departure of talented employees, falling productivity and conflict between two cultures are the most common problems in these processes. In this article, for employers, HR managers and integration teams, I look at the psychological process employees go through in merger and acquisition processes, how anxiety shows up at work and the steps that can be taken. The legal aspects of the process, such as the transfer of employment contracts, rights and working conditions, must always be assessed with an employment law specialist.

Why Is a Company Merger So Anxiety-Provoking for Employees?

Mergers and acquisitions are among the biggest changes in working life that employees cannot control. The main sources of anxiety are:

• Job security anxiety: The question "If there are two departments doing the same job, will one be closed?" occupies the minds of employees, especially in support functions (accounting, HR, purchasing, IT).
• Uncertainty about status and role: In the new organisation chart it is unclear who will report to whom and whether titles and authority will be kept.
• Loss of identity: For someone who has worked at the same company for many years, the company's name, logo and tradition are part of their identity. The question "Who are we now?" can create a deep sense of loss.
• Culture clash: When different ways of making decisions, meeting habits, ideas of hierarchy and communication styles come together, tension arises between "our way" and "their way".
• The perception of "winners and losers": Employees of the acquiring company may feel powerful, while employees of the acquired company may feel "conquered".
• Information gap: The fact that very little information can be shared in the early stages of the process because of confidentiality gives rumours fertile ground to spread quickly.

A significant part of these anxieties is understandable and realistic. From a psychological point of view, the problem is less the existence of anxiety than that it goes unanswered for a long time and the employee has to carry it alone.

How Uncertainty Shows Up at Work and in the Employee

Long-term uncertainty during mergers leaves marks at both the individual and organisational level. Common signs in employees include:

• Sleep problems, tension, irritability and difficulty concentrating.
• An increase in rumours and corridor conversations, with a considerable part of working hours spent guessing "what will happen".
• Avoiding risk-taking and initiative; distancing from work with the thought "everything will change anyway".
• An increase in job-seeking behaviour; in particular, the departure of the most experienced employees, who can find work easily.

This anxiety does not stay at work; it is carried home too. Considering loan repayments, children's education costs or elderly parents who depend on them, news of a merger turns into uncertainty experienced by the whole family for many employees. Tension between spouses, restlessness that spills over to children and social withdrawal are common in this period.

In Turkey, this picture is added on top of an already high level of stress. According to Gallup's 2026 report, 66% of employees in Turkey say they experienced stress during a large part of the previous day, and the share of employees who are truly engaged with their work is only 8% (Gallup, 2026; 2025 data). Given that the cost of low engagement to the world economy is estimated at around 10 trillion dollars, or 9% of global GDP (Gallup, 2026), it is clear that a further drop in engagement during a merger can mean a significant loss of value.

Loss of talent is one of the most expensive consequences of these processes. An analysis carried out in the UK reported that around 40% of the costs of staff leaving were attributable to mental health problems, and that 28% of employees had left their job in the past year or planned to leave in the coming year (Deloitte UK, 2022). This is UK-specific data; but it draws attention to the link between uncertainty and anxiety and staff turnover. The accumulated knowledge that makes up the value of the acquired company is often in the minds of those employees; when they leave, part of that value goes with them.

The Psychological Stages of a Company Merger

Employees' reactions in merger processes change over time. Knowing these stages helps in planning the right support at each stage:

Before and at the announcement: Rumours, shock and intense uncertainty. The need is to be informed as early as possible and directly from the source.

The transition period: The stage in which the new structure takes shape and decisions are announced step by step. Anxiety and resistance can peak in this period. The need is for regular communication, honest sharing of what is unknown and clarification of personal impact as soon as possible.

Integration: The stage in which systems, processes and teams come together. Cultural differences become most visible in this period. The need is for shared rules to be created together and for employees from both sides to get to know one another.

Settling in: The stage in which the new order becomes routine. The need is to make shared successes visible and reinforce the new identity.

The length of these stages varies according to the size of the company and the scope of the integration. For more on the psychology of change processes in general, you can read the article on the psychology of change management.

The Legislative and Psychosocial Risk Framework

The legal side of mergers and acquisitions is highly technical and specific to the organisation; an employment law specialist must always be consulted on matters such as the transfer of employment contracts, employees' rights and possible changes to working conditions. This article does not give information on these matters.

In terms of occupational health and safety, Article 5 of Law No. 6331 (Turkey's Occupational Health and Safety Law) requires the development of a coherent prevention policy covering the effects of factors related to work organisation, working conditions and social relationships (Law No. 6331, art. 5/f). Among the hazard categories listed in the Ministry of Labour and Social Security's 2024 Psychosocial Factors Information Guide are organisational culture, role at work, career development and interpersonal relationships (Ministry of Labour and Social Security, 2024). A merger can affect almost all of these categories at once. For this reason, it is useful to review the psychosocial risk assessment as part of the integration plan. For the practical steps, you can look at the article on psychosocial risk assessment.

What Can Employers Do in Mergers and Acquisitions?

Managing employee anxiety is as important for a merger's success as financial and operational planning. Practical steps include:

In communication:

• Do not let employees learn of the announcement from the press or social media; if possible, announce it at the same time, directly from senior management.
• Do not make promises that cannot be kept, such as "nothing will change". Share what is known, what is not known and when decisions will be announced, keeping them separate.
• Set up a regular and predictable communication calendar; for example, short briefing meetings every two weeks and an internal channel where frequently asked questions are answered.
• Make it easy to ask questions; open anonymous question channels and do not leave questions unanswered.

In clarifying personal impact:

• Clarify changes to role, reporting line and working conditions at the individual level as soon as possible. The longer the period of uncertainty, the greater the anxiety and the risk of people leaving.
• Identify critical talent early and hold one-to-one conversations with these employees.
• When there is a change, communicate it in a face-to-face meeting, not a mass email.

In bringing cultures together:

• Map the two companies' values, working habits and ways of making decisions without prejudice.
• Instead of imposing a "winning culture", create shared rules by taking good practices from both sides.
• Help employees from both sides get to know each other through mixed teams, joint projects and introductory meetings.
• Encourage managers to consciously drop the language of "us" and "them".

In support:

• Train managers in team management during periods of uncertainty, answering difficult questions and noticing an anxious employee. In the WHO's guidelines on mental health at work, the recommendation with the strongest evidence is mental health training for managers (WHO, 2022).
• Offer employees confidential individual counselling or an employee assistance programme (EAP), and remind them of it regularly throughout the process.
• Plan cognitive behavioural stress management workshops. A meta-analysis reviewing workplace stress management programmes found that cognitive behavioural programmes consistently showed a larger effect than other types (Richardson and Rothstein, 2008).

As the International Labour Organization emphasises, individual support measures should complement organisational measures, not replace them (ILO, 2026). A counselling line cannot take the place of an integration plan that drags uncertainty out for months.

In mergers, employees are most worn down not by the change itself but by not knowing when and how decisions about them will be made.

Say a medium-sized machinery manufacturer operating in Çorum was bought by a large holding company. The holding announced that the accounting and purchasing departments would move to head office within the first month, but did not clarify for three months what would happen to the employees in these departments. In that time, two experienced purchasing specialists moved to competitors, and a significant part of the supplier relationships went with them. Yet if these employees had been met one to one in the first months and their options discussed openly, it might have been possible for some to stay or at least for the handover of knowledge to be planned.

Brief Suggestions for Employees During a Company Merger

Managers and HR teams can also share the following suggestions with employees throughout the process. These suggestions do not replace organisational steps, but they can support the employee's capacity to cope with uncertainty:

• Get information from the right source. Rumours are often more worrying than the truth. Follow official announcements and ask the questions on your mind directly to your manager or HR.
• Focus on what you can control. You may not be able to influence the merger's overall decisions; but you can shape the quality of your own work, your learning goals and the relationship you build with your new colleagues.
• Test "worst-case" thoughts. When a thought like "I'm definitely going to lose my job" comes, writing down the concrete information that supports and does not support it can help move anxiety to a more realistic place. This is one of the commonly used techniques of the cognitive behavioural approach.
• Give yourself the chance to get to know new colleagues. Employees of the other company may have similar worries. A short chat is one of the easiest ways to soften the perception of "them".
• Keep your daily routine. Sleep, nutrition, exercise and time spent with family are the most important protective resources in long periods of uncertainty.
• Ask for support when needed. If sleeplessness, intense anxiety or low motivation last for weeks, getting help from the support available at the organisation or from a professional can be useful.

How to Start in Your Organisation

For organisations that want to manage the employee dimension of a merger or acquisition, a three-stage roadmap can be proposed:

Needs analysis: Shortly after the announcement, measure anxiety level, perception of uncertainty, trust and intention to leave in both companies with a short, anonymous pulse survey. Identify critical roles and the groups that will be most affected. Run focus group discussions to compare the culture of the two companies.

Programme: According to the results of the analysis, plan together the communication plan, change leadership training for managers, cultural integration workshops and individual or group psychological support for employees. You can look at such programme models on the corporate services page.

Measurement: Repeat the pulse survey at different stages of the integration; track indicators such as absenteeism, staff leaving (especially departures in critical roles) and use of support services. These indicators let you notice early which teams need extra support.

Frequently Asked Questions

When should we give employees the news of the merger?

Legal and commercial confidentiality obligations can limit the timing of information sharing; you should act on this together with your legal advisers. From a psychological point of view, what matters is that employees learn the news directly from the company rather than from outside, and as early as is appropriate.

Why do employees of the acquired company feel worthless?

An acquisition can be perceived by some employees as their company having been found "inadequate" or "conquered". To reduce this perception, it is important to openly appreciate the acquired company's strengths, expertise and tradition, and to give these employees a say in integration decisions as well.

What should managers pay attention to during a merger?

Managers should be able to say "I don't know yet, I'll share it when I find out" instead of speculating on things they don't know; hold regular one-to-one meetings with their team; and notice anxious employees. It should not be forgotten that managers also experience uncertainty in this process, and support should be offered to them too.

How long does it take for cultural differences to close?

It is not possible to give a definite time for this. Cultural integration often takes much longer than systems integration, and turning completely into a single culture is not always necessary either. What matters is that agreement is reached on shared values and working rules and that differences are managed as a richness, not a source of conflict.

• #mergers and acquisitions
• #change management
• #organisational culture
• #employee anxiety

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Eda Erkan Alapala

Klinik Psikolog. İstanbul Kent Üniversitesi Klinik Psikoloji Tezli Yüksek Lisans mezunu; bilişsel davranışçı terapi, çocuk merkezli oyun terapisi ve çocuk-ergen psikoterapisi alanlarında eğitimlerini tamamlamıştır.

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