Workplace Mediation Works.
But Only If Employers Engage Early
In the United States, the average combined defense and settlement cost when an employment charge becomes a lawsuit is $125,000. In Washington State, it is significantly higher. That figure comes from a representative study of closed claims reported by Hiscox Insurance, covering small and mid-size employers with fewer than 500 employees. If the case proceeds to trial, the employer can expect to spend $175,000 to $250,000 in legal fees alone, without accounting for the cost of replacing the employee, the institutional knowledge lost, or the months of diminished morale across the team.
Set that figure alongside a different one: peer-reviewed research consistently finds that workplace mediation resolves between 60% and 80% of disputes, with outcomes that hold at one year.
The first number represents what happens when organizations wait. The second represents what is possible when they act early.
The Cost of Conflict Beyond Legal Fees
Employers tend to measure conflict costs in terms of litigation exposure. But litigation is the tail end of a process that starts months or years before a complaint is filed, and the accumulated cost of that process dwarfs the legal fees.
The Workplace Peace Institute’s 2024 State of Conflict in the Workplace survey found that U.S. workers spend an average of two hours per week dealing with workplace conflict. With the Bureau of Labor Statistics placing the average annual salary at roughly $59,000, that translates to more than $3,200 per employee per year in lost productivity from interpersonal friction alone. Across a 100-person organization, the annual cost exceeds $320,000, none of which appears on a balance sheet.
The same survey found that 72% of organizations either lack a formal conflict resolution policy or have employees who are unaware one exists.
SHRM’s 2024 Civility Index found that nearly two-thirds of U.S. workers have experienced incivility at work. Workers who rated their workplace as uncivil were three times more likely to be dissatisfied with their jobs and twice as likely to leave within the next year. A separate Gallup finding reinforces the pattern: employees who are actively disengaged leave at 12 times the rate of highly engaged employees.
Most workplace conflicts do not explode. They erode. They reduce engagement, degrade trust, and push capable people toward the door. When they do finally surface, they cost exponentially more to resolve than they would have with earlier intervention.
Turnover as a Cost Multiplier
When conflict does not end in a lawsuit, it frequently ends in a resignation. Resignations are expensive in ways that organizations routinely underestimate.
Gallup’s research places the cost of replacing an individual employee between 50% and 200% of annual salary, depending on role complexity. A 2026 analysis by Insignia Resources put the average across all positions at $45,236 per departure. That average obscures the real exposure for mid-level and senior roles: replacing a manager earning $80,000 costs $40,000 to $160,000, and for senior leadership, the figure can exceed twice annual compensation.
The preventability of these departures is the more significant finding. The Work Institute’s 2025 analysis of more than 120,000 exit interviews concluded that 75% of voluntary departures are preventable. Gallup’s own research found that 42% of employees who left voluntarily said their manager or organization could have done something to keep them.
Conflict-related turnover costs U.S. businesses an estimated $1 trillion annually, according to Gallup.
What the Research Says About Mediation Effectiveness
When most people hear “employment mediation,” they picture two lawyers in separate conference rooms negotiating a release and settlement figure. These legal mediations hold an important place. By the time a legal claim has been filed against an employer, that claim marks the end of a relationship, not the preservation of one.
Facilitative workplace mediation is a different process with a different objective. It is a guided conversation between an employee and an employer (or between coworkers), conducted by a neutral third party, aimed at rebuilding a working relationship while one still exists to rebuild.
The empirical evidence for mediation effectiveness is strong and consistent across multiple studies and jurisdictions.
A meta-analysis published in the Negotiation Journal (MIT Press) found that workplace mediation produces settlement rates between 60% and 80%, with most participants reporting high satisfaction with both the process and the outcomes. The study drew on data from multiple research teams (Kim et al., Mareschal, Wood & Leon, Swaab & Brett, and Poitras & Le Tareau) and noted that satisfaction was not limited to short-term outcomes but extended to long-term perceptions of fairness and compliance.
A landmark 2018 study by Bollen, Euwema, and Herrman, also published in the Negotiation Journal, tracked outcomes of workplace mediations one year after the process concluded. It was the first empirical research to measure whether positive outcomes of workplace mediation are sustained over time. The findings showed a positive relationship between short-term and long-term effectiveness, with a 78% agreement rate in the dataset. Parties generally perceived the mediation as effective and durable at the one-year mark.
The Timing Problem
Mediation’s effectiveness is not seriously in question. What remains underexploited is the timing.
The typical employment dispute follows a predictable arc: a friction point develops, goes unaddressed (or overaddressed), escalates through avoidance, mismanagement, or petty complaints, and eventually surfaces as a formal complaint or a resignation. When it does not resolve, it ends up in front of a lawyer. By the time counsel is involved, positions are entrenched, the relationship is functionally over, and the available outcomes have narrowed to a dollar figure and a separation agreement.
The Workplace Peace Institute’s 2024 data illustrates what happens in that gap. Seventy-two percent of organizations either lack a formal conflict resolution policy or have employees who are unaware one exists. Most employees navigating conflict have no structured path to resolution and no clear signal that one is available. The result is predictable: capable people absorb the friction, disengage, and eventually leave.
The Work Institute’s finding bears repeating here: 75% of voluntary departures are preventable. These are not employees who were determined to go. They are employees who would have stayed if someone had intervened.
Facilitative workplace mediation fills that gap: the space between “this isn’t working” and “I need a lawyer.”
What the Process Looks Like
A facilitative workplace mediation bears little resemblance to the mediation that happens during litigation. There are no briefs, no demand letters, no discovery, and usually no lawyers for the parties in the room.
The mediator conducts confidential intake conversations with each participant, facilitates private pre-sessions to help each person identify what matters most to them, and then guides a joint conversation aimed at producing a practical, forward-looking agreement.
The conversation is protected under mediation confidentiality. In Washington, that protection is codified in RCW 7.07. Nothing said in mediation can be used in a later proceeding, and the mediator does not report a verdict to anyone. The parties can decide how much, if any, of the mediation they would like to formally document in a personnel file.
In a typical facilitative workplace mediation, the employee is still employed and intends to stay. The goal is a workable path forward, not a settlement figure. The mediator guides but does not decide; the parties own their outcome. The process is voluntary, and either party can end it at any time. The employer usually pays the fee, which is typically a fraction of a single round of legal bills.
The agreements that emerge tend to be practical: clear expectations, communication commitments, check-in schedules, and agreed-upon boundaries. They hold because the parties wrote them. Research consistently shows that people comply with commitments they helped craft at significantly higher rates than they comply with outcomes imposed by a third party.
The Business Case in Plain Numbers
For an employer evaluating whether early mediation is worth the investment, the arithmetic is straightforward.
A facilitative workplace mediation typically costs between $3,000 and $10,000 for a half-day or full-day session. The relevant comparisons:
Turnover: $40,000 to $160,000 to replace a mid-level employee, according to Gallup, with the average cost of a departure reaching $45,236 (Insignia Resources, 2026).
Litigation defense: $75,000 to settle an employment claim before trial; $175,000 to $250,000 to take one to verdict (Workforce.com, Hiscox).
Productivity losses: $3,200 per employee per year from conflict-related distraction alone (Workplace Peace Institute, 2024).
Management time: Managers spend 20% to 40% of their time handling conflicts, according to research by CPP Inc. and The Myers-Briggs Company. That is time diverted from leadership, development, and revenue generation.
If a single facilitative mediation preserves one employment relationship, it pays for itself many times over. If it prevents a claim, the return is several orders of magnitude higher.
When Facilitative Mediation Fits
Facilitative workplace mediation is not a replacement for a legally required investigation. It is not appropriate when there is a credible allegation of criminal conduct. And it will not help if both parties have already decided the relationship is over.
But it is the right tool for a much larger category of workplace disputes than most employers recognize: a high-performing employee and a new manager who cannot find a working rhythm; a long-tenured worker who feels passed over and is beginning to disengage; two department leads whose teams have started to mirror their friction; an employee who raised a concern informally and feels it was dismissed; a supervisor who believes an employee has become difficult but cannot articulate why.
These situations do not and should not begin with a call to a lawyer. However, they begin with a slow deterioration in trust, communication, and engagement. They end with a resignation, a complaint, or both.
The research is consistent: early intervention is cheaper, more effective, and more durable than formal processes. The question is not whether mediation works. It is whether organizations will reach for it before the window closes.
Rob Gillette is the founder of Gillette Mediation, a neutral dispute resolution practice serving attorneys, employers, and employees across Washington State. A former employment litigator and CEO, Rob holds a mediation certification from the Straus Institute for Dispute Resolution at Pepperdine University and serves on the CR 39.1 federal mediator panel for the Western District of Washington.
Sources Referenced
• Hiscox Insurance, Guide to Employee Lawsuits (representative study of 1,214 closed claims, SMEs with fewer than 500 employees)
• Workplace Peace Institute, State of Conflict in the Workplace survey (April 2024)
• SHRM (Society for Human Resource Management), Civility Index (2024)
• Gallup, research on employee replacement costs, engagement, and turnover drivers (2024–2025)
• Work Institute, 2025 Retention Report (analysis of 120,000+ exit interviews)
• Bollen, K., Euwema, M., and Herrman, M.S., “The Long-Term Effectiveness of Mediating Workplace Conflicts,” Negotiation Journal (MIT Press), Vol. 34, No. 3 (2018)
• Kim et al. (1993); Mareschal (2005); Wood and Leon (2005); Swaab and Brett (2007); Poitras and Le Tareau (2009)
• CPP Inc. / The Myers-Briggs Company, Workplace Conflict and How Businesses Can Harness It to Thrive (2008)
• Workforce.com, analysis of employment litigation defense costs
• Insignia Resources, Average Turnover Rate by Industry (2026)