Conflicts Between Business Partners: Prevent, Resolve, Separate if Needed

Why do conflicts between partners endanger the whole business?

Two or three people found a business together, complement each other well, and build it up over years. Then one becomes more cautious while the other wants to grow. One works more than the other, or feels that way. An investment is postponed because they cannot agree. At some point the partners talk to each other only through lawyers, and the employees notice long before.

A partner (in German, Gesellschafter) is a co-owner of a company, such as a GmbH, the German limited liability company, or a partnership. Disputes between partners are more expensive than most other conflicts, because neither can simply dismiss the other and because decisions that require both are left lying. The guiding question of this guide is: how can conflicts between partners be prevented, resolved early, and, if there is no other way, ended so that the business survives?

To answer it, I first describe how conflicts escalate and show what research says about conflict in teams and founding teams. Then come rules for prevention, a step plan for resolution, and the basics of a separation. This article is not legal advice. For contracts and separations you need legal and tax support.

Task conflict or relationship conflict: what is the difference?

Since the work of the researcher Karen Jehn in the 1990s, conflict research has distinguished two main types. A task conflict is about content: should the business invest in a new building, what price do we set, whom do we hire? A relationship conflict is about people: distrust, hurt, the feeling of not being respected. More recent studies add a third type, process conflict, meaning disputes about who does what and how decisions are made.

The distinction is practical because it shows where a conflict currently stands. A dispute about expansion can be resolved with numbers, scenarios, and good moderation. A dispute about who contributes more cannot be resolved with numbers alone. Many partner conflicts start on the facts and turn personal, because unresolved process questions come to feel like slights over time.

The model: Glasl's nine escalation stages

The Austrian conflict researcher Friedrich Glasl described how conflicts escalate step by step. His model comprises nine stages, which he groups into three phases. The basic idea: with each stage the view narrows, the parties lose room to maneuver, and the means suitable for resolution change.

1. Phase 1: Both can win (stages 1 to 3)

   Positions harden, debate grows sharper, then actions replace words: one side creates facts without asking. In this phase the partners can still resolve the conflict themselves or with moderation.

2. Phase 2: One wins, one loses (stages 4 to 6)

   Coalitions are sought, for example with employees, family, or the bank. Loss of face and open threats follow. Here a neutral person is usually needed, such as a mediator.

3. Phase 3: Both lose (stages 7 to 9)

   Limited destruction, fragmentation, and finally going over the abyss together: one accepts one's own damage as long as the other loses more. Here usually only arbitration, court, or separation decide.

An everyday analogy helps to understand the stages. A conflict runs like a path down a slope. At first you can still turn back and continue along the top. The further you descend, the harder the way back, and from a certain point you can only climb up again with outside help. For partners this means: the cheapest moment for resolution is early, when it still feels unnecessary.

The right moment to resolve a partner conflict is when talking about it still feels like an overreaction.

What does research show about conflict in teams and founding teams?

Textbooks long held that task conflicts are good for teams and only relationship conflicts are harmful. De Dreu and Weingart (2003) tested this assumption in a meta-analysis that included 15 to 26 studies depending on the question. The result contradicted the textbook view. Relationship conflicts were clearly negatively associated with team performance and satisfaction. But so were task conflicts, and to a similar degree. In complex tasks such as decision-making and projects, the negative association was stronger than in production tasks.

One finding of the study is particularly important for partners: task conflicts did less harm when they were only weakly linked with relationship conflicts. In other words, a dispute about the matter is bearable as long as it does not become personal. The combination is what is dangerous.

For founding teams there is a more recent survey of 178 cofounders in Pakistan (International Journal of Conflict Management, 2026). There, only relationship conflicts were directly associated with the intention to leave one's own company. Task, process, and relationship conflicts all affected this intention through negative emotions, however. The founders' emotional intelligence, the ability to perceive and manage one's own and others' feelings, weakened this link. The study is a one-time survey in one country and cannot establish causes.

Another line concerns shareholdings. Weissenböck, Breugst, Patzelt, and colleagues (2024) examine how the size of an equity stake affects a founder's identification with his team. Their theoretical argument: ownership can awaken responsibility and care, but also possessiveness and defending one's own territory. Together this suggests an inverted U-shaped relationship, in which very unequal stakes tend to weaken identification with the team.

Prevention: rules while you still get along

Most partner conflicts become hard to resolve because there is no rule for the disputed question. A partnership agreement that reflects only the statutory minimum is of little help in a dispute. The following points belong in every conversation with your lawyer, ideally at founding or when a new partner joins.

• Responsibilities: who is responsible for which area, and which decisions require both?
• Deadlock decisions: what happens when two equally strong partners cannot agree, for example moderation, an advisory board with a casting vote, or a defined procedure?
• Information rights: which figures does each partner receive and when, including the one not involved in day-to-day business?
• Exit: under which conditions can a partner leave or be excluded, and at what price?
• Valuation: by which method is the stake valued, and how is a settlement paid without overburdening the business?
• Dispute resolution: is mediation or arbitration provided for before going to court?

At least as important as the contract is a fixed date. A partners' meeting once a quarter, with figures, outlook, and an agenda item "What is between us?", prevents many conflicts before they reach stage 3. What oversight, transparency, and accountability can look like in small businesses without a corporate apparatus is described in Corporate governance for small businesses. Whether an advisory board makes sense as a neutral body is examined in An advisory board for the Mittelstand.

Resolution: a step plan for emergencies

Once a conflict exists, the right means depends on the escalation stage. A common mistake is using too weak a means too late, such as another one-on-one talk when the parties are already forming coalitions.

Mediation is a voluntary, confidential procedure in which a neutral person helps the parties find a solution themselves. The mediator does not decide. In Germany the procedure has been regulated by the Mediation Act since 2012. Arbitration, by contrast, ends with a binding decision by a private arbitral tribunal that the parties agreed on in advance.

Regardless of the means: employees and customers need calm, factual information when the conflict becomes visible. Rumors do more harm than an open statement that the partners are working on a solution. How to deliver bad news openly is described in Delivering bad news.

Separation: when it no longer works

Not every conflict can be resolved. Sometimes the partners' goals have drifted so far apart that separation is the better solution for everyone. There are two views on this. The first sees separation as a failure to be avoided at almost any price. The second sees an early, orderly separation as protection for the business against years of paralysis.

My assessment: the second view is the more responsible one in most cases. A business whose owners are in phase 3 loses employees, customers, and opportunities. Separation is then not a defeat but the decision to limit the damage. What matters is that it happens in an orderly way: with a comprehensible valuation, a settlement the business can bear, and a clear handover of customers and responsibilities.

Anyone taking over a stake or buying out a partner faces questions similar to those in a small acquisition. These are covered in Growth through acquisition. In family businesses there is the added task of separating family and business, which Running a family business addresses.

The next step

1. Read your partnership agreement and check whether it covers the six points of the checklist.
2. Honestly assess which of Glasl's stages you are at right now, even if it is stage 1.
3. Arrange a partners' meeting with the agenda item "What is between us?".
4. If you are in phase 2: look for a mediator together before one of you goes to a lawyer alone.

Conclusion: how do you deal with conflicts between partners?

We began by asking
conflicts between partners can be prevented, resolved early, and if necessary ended so that the business survives. The answer has three parts. Preventing means writing rules for responsibilities, deadlock, exit, and valuation while you still get along, and talking regularly about what lies between the partners. Resolving means honestly recognizing the escalation stage and choosing the right means early, because a dispute about substance only becomes dangerous once it turns personal. Separating means limiting the damage before both lose.

The most important sentence in this guide is uncomfortable: most partner conflicts do not become unsolvable through one big dispute, but through many small conversations that never took place.