Werkt Executive Coaching echt?

What the evidence says and why the ROI question is both more complex and more answerable than most coaches admit.

Jan Salomons  |  salomons.coach  |  March 2025

This article draws on a curated body of peer-reviewed research. If you want to go deeper, the full evidence base: six meta-analyses, major industry studies, effect size tables, and a complete bibliography, is available as a free reference document. You will find the link at the end of this article.

If you are a senior leader or executive, you have almost certainly encountered coaching, either as a recipient, a sponsor, or a skeptic. You may have experienced it as genuinely transformative. You may also have sat through sessions that felt more like expensive therapy with a business veneer. Both experiences are real, and both are reported in the data.

The question is not whether coaching can work. The evidence on that is, by now, reasonably solid. The harder question, the one most practitioners prefer not to answer directly, is how you know when it is working, how you measure it, and what a rigorous return on investment actually looks like.

This piece works through the evidence: what the research shows about coaching effectiveness, where the methodology is credible, where it is not, and what it means for how organizations should buy and evaluate coaching engagements.

The State of the Evidence

The most authoritative survey of executive coaching practice was published by Harvard Business Review in January 2009. Researchers Diane Coutu and Carol Kauffman, the latter a faculty member at Harvard Medical School, surveyed 140 experienced coaches to produce what HBR described as its first systematic research into the field. The headline finding was simultaneously reassuring and cautionary.

Coaching as a process was judged highly effective by the coaches themselves. But the field was also described as being in its ‘adolescence’: without agreed standards, without meaningful entry barriers, and without credible mechanisms for measuring whether engagements actually worked. Especially the latter is perceived as ‘critical’.

That tension has not fully resolved in the sixteen years since. But the evidence base has grown considerably, and the picture is more nuanced than either enthusiasts or critics tend to acknowledge.

What Coaching Is Actually Used For

The HBR research revealed something important about how the purpose of coaching has shifted. A decade before the survey, most organizations hired coaches to address problem behavior, the talented but toxic executive who needed to change or go. By 2009, that remedial model had largely been displaced. The dominant reasons for engaging a coach had become:

• Developing high-potential performers or facilitating leadership transitions  (48% of engagements)
• Acting as a strategic sounding board for senior executives  (26% of engagements)
• Addressing a derailing or potentially derailing behavior  (12% of engagements)

This shift matters for how effectiveness is measured. Coaching someone out of a crisis is easier to evaluate against a single binary outcome. Coaching for leadership growth, strategic clarity, or cultural impact requires a different, and more sophisticated, measurement framework.

The ROI Numbers and How to Read Them

The ROI figures cited in the coaching industry are, on the surface, dramatic. A frequently referenced study by MetrixGlobal found returns of 529% to 788% on executive coaching programs. A Manchester Inc. study from 2001 found a seven-fold return on investment. Research published in Fortune magazine suggested executives report an average return of more than six times the cost of their coaching engagement.

These numbers deserve both attention and scrutiny.

Attention because they are consistent across independent studies conducted over two decades, across different industries, and using different methodologies. When multiple research streams converge on a similar order of magnitude, that is meaningful.

Scrutiny because most of these studies rely on self-reported outcomes, are not longitudinally tracked, and use coached individuals as both subjects and evaluators of success. As the HBR researchers noted bluntly: most evidence on effectiveness ‘remains anecdotal.’ The positive stories outnumber the negative ones, but anecdote is not data.

The International Coaching Federation (ICF), which represents the largest body of coaching research globally, found that 86% of organizations that calculated ROI made back their investment, with a median return of 7x. But the critical qualifier is that most organizations never calculated ROI in a rigorous way. They relied on perceived value, participant satisfaction, or qualitative manager assessments.

This is the core problem. Not that coaching does not work. But that the profession has been collectively reluctant to subject itself to the same evidentiary standards it would ask of any other business investment.

What the Strongest Evidence Actually Shows

Setting aside the methodologically weakest studies, the evidence that holds up to scrutiny covers several domains.

Productivity and performance

Research by Olivero, Bane and Kopelman, published in Public Personnel Management, found that training alone produced a 22.4% increase in productivity. When combined with coaching, that figure rose to 88%. The mechanism they identified was straightforward: training provides knowledge; coaching converts knowledge into consistent behavior.

This finding has significant implications for organizations that invest heavily in leadership training programs without a coaching component. The learning without behavioral follow-through depreciates rapidly, what researchers call the ‘forgetting curve.’ Coaching is the mechanism that makes development stick.

Decision-making and leadership impact

A study cited by HBR found that 71% of executives who received coaching reported measurable improvement in their decision-making capabilities. This is significant because decision quality is one of the most directly linkable behaviors to business outcomes at the senior level — and one of the hardest to improve through conventional management development.

A PwC study found that 72% of coached executives reported handling organizational change and transitions more effectively. Given that most senior leadership failures occur precisely at moments of transition — a new role, a restructuring, a market disruption — this is an area where the ROI of coaching is particularly straightforward to construct.

Organizational performance

The Human Capital Institute’s research on coaching culture found that organizations with embedded coaching practices reported a 36% improvement in overall organizational performance. Separately, research aggregated by the Institute of Coaching (affiliated with Harvard Medical School’s McLean Hospital) found that 70% of individuals who received coaching reported improvements across work performance, interpersonal relationships, and communication effectiveness.

At the portfolio level, Laurie Bassi and Daniel McMurrer, writing in HBR’s March 2004 issue, found that companies investing heavily in employee and leadership development outperformed the S&P 500 by 17 to 35% during the period studied. While not exclusively attributable to coaching, this remains one of the most robust longitudinal data points connecting investment in people development to shareholder returns.

The ‘Double Leap of Faith’ Problem

Here is where intellectual honesty requires a pause.

Ron Ashkenas, writing in HBR in 2020, articulated the core measurement challenge with precision. Linking coaching to business outcomes requires what he called a ‘double leap of faith’: first, that coaching changes a leader’s behavior; and second, that changed behavior produces better business results.

“There is some evidence that if a leader learns how to behave differently — making faster decisions, for example, or delegating more frequently — then business results will follow. But this requires a double leap of faith… The problem is that neither assumption is a sure thing.”
Ron Ashkenas, Harvard Business Review, 2020

This is not an argument against coaching. It is an argument for a fundamentally different approach to how coaching engagements are structured and evaluated.

Ashkenas’ prescription was direct: rather than working on behavioral change in isolation and hoping business results follow, coaches should identify specific short-term business outcomes at the outset and work on behaviors in the context of achieving those outcomes. The behavioral change and the business result are pursued together, not sequentially.

Very few coaches operate this way. Most are trained to work on the person, and trust that the organization will benefit. The evidence suggests this trust is often warranted, but it makes accountability nearly impossible.

When Coaching Fails — and Why

The HBR research also identified the conditions under which coaching reliably does not work. The findings are counterintuitive to many buyers.

The first failure mode is engaging a coach to fix a behavioral problem in an unwilling subject. Coutu and Kauffman’s research was unambiguous: coaching does not work for ‘blamers, victims, and individuals with iron-clad belief systems.’ The presence of a coach does not substitute for a genuine desire to change. A related HBR finding warned that managers who provide constant but ineffective feedback — ‘always-on managers’ — can actually degrade team performance by up to 8%.

The second failure mode is poor fit between coach and executive. The research found that chemistry and trust between coach and coachee are more predictive of outcomes than the coach’s credentials, sector experience, or methodology. This has a practical implication: organizations that assign coaches based on reputation or availability, without allowing the executive to select for fit, are significantly reducing their expected return.

The third failure mode is organizational ambivalence. When the organization pays for coaching but is not genuinely committed to the executive’s development — or is, in effect, using the coaching engagement as a documented step before a performance exit — the coaching dynamic is corrupted from the start. The HBR research found that top management commitment to the executive’s development is a prerequisite, not an optional condition.

What a Rigorous Evaluation Framework Looks Like

For organizations that want to move beyond anecdote and toward actual accountability, the measurement framework for coaching needs to operate at three levels simultaneously.

Level 1: Behavioral change

This is the proximate outcome of coaching. It is best measured through structured 360-degree feedback conducted before and after the engagement, with specific behavioral indicators agreed at the outset. The key question is not ‘does the executive feel they have grown?’ but ‘do the people who work with, for, and above this executive observe consistent behavioral change in targeted areas?’

Relevant indicators include: quality and speed of decision-making, frequency and quality of delegation, escalation rates from the team, and observed consistency between stated values and actual conduct.

Level 2: Team and unit performance

Behavioral change at the individual level should produce measurable changes at the team level within a defined timeframe. Metrics in this category include: team engagement scores, absenteeism and attrition rates, internal NPS, meeting efficiency, and — where measurable — error rates, output quality, and cross-functional friction.

The connection between individual coaching and team metrics requires that both be tracked from the same baseline, with the same timeline. This is where most organizations fail: they measure the coaching and the business separately, making causal analysis impossible.

Level 3: Business outcome

This is the most ambitious level and requires the most discipline. The ICF’s standard ROI formula — (monetary value of output improvement minus coaching cost, divided by coaching cost) — is straightforward to apply when the outcomes are pre-defined and monetizable.

For a sales leader, this might be win rates and revenue attainment. For an operations leader, it might be failure costs and throughput. For a general manager navigating a transformation, it might be time-to-decision and stakeholder alignment scores. The point is that the metric must be agreed before the engagement begins, not reverse-engineered after it concludes.

Organizations that structure coaching engagements this way — starting from business outcomes and working backwards to the behaviors that drive them — consistently report stronger ROI and stronger executive satisfaction. They also tend to select better coaches, because the accountability framework makes it immediately apparent when an engagement is not progressing.

Implications for How Organizations Should Buy Coaching

The evidence points toward a clear set of principles for executives and organizations who want coaching to deliver measurable returns.

Start with the business problem, not the coach

Define the specific outcomes the organization needs before selecting a coach. What decisions need to improve? Which behaviors are limiting team performance? What does ‘success in 12 months’ look like in measurable terms? The coach should be selected for their ability to work within that frame — not the other way around.

Insist on behavioral specificity at the outset

Agree on three to five observable behaviors that will change as a result of the engagement. Define how each will be measured. This is not about reducing a complex human being to a scorecard; it is about ensuring that both the coach and the executive have a shared, honest understanding of what the engagement is for.

Build measurement into the contract, not the review

ROI measurement should be a contractual component of the engagement, not an afterthought at the debrief. This means establishing baselines before the coaching starts, defining which metrics will be tracked, and agreeing on who will collect and assess the data.

Treat organizational commitment as a prerequisite

If the organization is ambivalent about the executive’s development — or if the coaching is implicitly punitive — do not begin. The HBR research is unambiguous: organizational commitment is a necessary condition for a successful coaching engagement, not a nice-to-have.

Separate coaching from therapy, and know which you need

A significant proportion of coaching engagements drift into territory that is more appropriately addressed by a clinical psychologist or organizational therapist. The HBR research found that 76% of coaches have ‘assisted executives with personal issues’, despite only 3% being hired for that purpose. Organizations should be clear about what they are commissioning — and coaches should be equally clear about their scope.

The Bottom Line

The evidence base for executive coaching is substantial enough to take seriously and imperfect enough to treat carefully. Coaching works — not always, not automatically, and not without clear conditions. When those conditions are met, the returns are real and, in many cases, exceptional.

The problem is not with coaching. It is with how coaching is typically bought, structured, and evaluated. Most organizations invest in it as an act of faith rather than as a managed business intervention. They select coaches on reputation rather than fit, measure success through satisfaction rather than outcomes, and calculate ROI — if they do so at all — long after the moment for honest evaluation has passed.

The organizations that consistently report the strongest returns from coaching do something different. They define the business outcome before they select the coach. They treat behavioral change as a means to that outcome, not as the outcome itself. They measure what they said they would measure, from the baseline they established at the start.

That is not a novel methodology. It is simply the discipline of treating coaching as the serious business investment that — at the prices being charged — it undeniably is.

Sources & Further Reading

1. Coutu, D. & Kauffman, C. (2009). “What Can Coaches Do for You?” Harvard Business Review, January 2009.

2. Ashkenas, R. (2020). “Executive Coaches, Your Job Is to Deliver Business Results.” Harvard Business Review, August 2020.

3. Bassi, L. & McMurrer, D. (2004). “How’s Your Return on People?” Harvard Business Review, March 2004.

4. Olivero, G., Bane, K.D. & Kopelman, R.E. (1997). Executive coaching as a transfer of training tool. Public Personnel Management, 26(4), 461–469.

5. MetrixGlobal LLC (2001). Executive Coaching: ROI Study for a Fortune 500 Company. Sponsored by The International Coach Federation.

6. International Coaching Federation (ICF). Global Coaching Study & ROI Research. Various editions 2012–2024.

7. Human Capital Institute (2014). “Coaching: The New Secret Weapon for Engagement.” HCI Survey Report.

8. PwC (2017). “Executive Coaching Survey.” PricewaterhouseCoopers, Global.

9. Institute of Coaching, McLean Hospital / Harvard Medical School. Coaching Research Summaries (ongoing).

Want the full research behind this article?

This piece summarizes the most relevant findings. The complete reference document covers six peer-reviewed meta-analyses, consolidated effect size tables, industry study summaries, and documented failure conditions — all with full source attribution. Free to download.