Inside DDI's Global Leadership Forecast 2025 (10,796 leaders worldwide) sits a number from a parallel dataset that explains a great deal of the current burnout picture. From DDI's assessments of more than 70,000 manager candidates, only 19% demonstrate strong delegation abilities. Put the other way, 81% of the pipeline being moved into management roles is weak at the one behaviour that most reliably prevents burnout in the person doing the role.
The same forecast finds 71% of leaders under significantly higher stress than the year before, with 40% having considered stepping back from leadership to protect their wellbeing. Burnt-out leaders are 3.5 times more likely to leave. The pipeline that organisations are counting on for the next decade is, on DDI's evidence, both more stretched than it has ever been and missing the single behaviour that would keep it standing.
Why The 19% Is A Behaviour Number, Not A Skills Number
Delegation is named in every management textbook ever written. The frameworks are not the problem. RACI, the Eisenhower matrix, the situational leadership grid, all are correct and freely available. The 81% are not failing because they have not seen the model. They are failing because delegation is a real-time conversation that runs on instinct under time pressure, with a real person in front of them, and the instinct most rising managers default to is to do it themselves.
The supporting evidence converges. DDI's wider 2025 dataset shows 77% of CHROs lack confidence in their bench strength for critical roles. Gallup's State of the Global Workplace 2026 reports that manager engagement has fallen from 31% in 2022 to 22% in 2025, a nine-point decline, with leaders themselves reporting higher stress, anger and loneliness than the individual contributors they manage. Three different research houses, three different methodologies, one finding. The middle layer is the thinnest it has been in years, and the conventional response (more programmes, more frameworks, more 360-degree feedback) is not closing the gap.
What Most Organisations Are Trying
The default rising-leader programme is content-heavy and rehearsal-light. A six-module cohort on a learning platform. A coaching pod every fortnight. A reading list. A capstone presentation. By the time the new manager has finished the programme they can articulate the theory of delegation in a panel interview, and still cannot reliably hand a piece of work to a direct report on a Thursday afternoon when both of them are short on time.
The mechanism is well established. Roediger and Karpicke (2006), in Psychological Science, established that being tested on material lifts long-term retention by roughly 50% compared with re-reading the same content. Most rising-leader programmes are the re-reading kind. By the time the delegation moment arrives in a real meeting, very little of what was taught is accessible, and the manager defaults to whichever instinct they had before the programme.
Ericsson's Peak (2016) on deliberate practice is even more pointed. Motor behaviours, including the first-reaction kind that drive delegation, change only with focused, feedback-rich repetition against a clear target. They do not change with awareness. The reason 81% of rising leaders still cannot delegate after their organisation has spent thousands of pounds on their development is not laziness or lack of insight, it is that the programme was built to teach knowledge, and delegation is not a knowledge problem.
What Actually Works
The behavioural-science answer is rehearsal in conditions that look like the real conversation. In Sidestream's own academic behaviour-change work, building on research from UCL, Cambridge and Bocconi, participants who learned a communication skill through immersive role-play scored roughly 20% higher on observed behaviour than those who learned the same content through video or slide-show training. Self-rated confidence did not predict observed performance. A Dunning-Kruger pattern that we now design out of programmes by measuring behaviour, not self-report.
Applied to delegation, that means a small group of rising leaders, a professional actor playing a stretched direct report, three or four full conversations recorded and replayed, with feedback against a clear behavioural anchor (handing the work over without taking it back, naming the success criteria, naming the support available, agreeing the check-in cadence). By the third rehearsal the new manager has done the conversation often enough that the next time it happens in real life, the right move is the first one rather than the rescued one.
What We Do About It
Our manager workshops and immersive simulations are designed for exactly the rising-leader behaviours, including delegation, that the average development programme does not move. The work is short, intense and behaviourally measured, and it lands at the point in a manager's first 18 months when the habit is still forming. Read also our piece on the manager engagement cliff for the wider Gallup pattern, or our piece on DDI's 8% number for the change-leadership angle.
Delegation is a behaviour learned in front of a person, not a process learned in front of a slide.
The organisations that hold their middle layer together over the next two years will not be the ones with the prettiest leadership content. They will be the ones whose rising managers have rehearsed the awkward handover until it is the default move, not the second thought. Book a call to look at what rehearsal would look like for your bench.
Book a free 30-minute diagnostic call → or read about our research-backed approach.