Senior teams are often clear that manager effectiveness matters. The harder question is whether they can show where it matters, what is getting in the way, and what they expect to improve as a result of focused development.
That is the job of an evidence page. It is not a brochure for a leadership programme. It is a working document that gives an executive team a shared view of the leadership conditions affecting people, performance and change.
The 2026 leadership gap should not be treated as a fashionable headline. In most organisations, the gap is visible in ordinary moments: a difficult conversation delayed, a decision that sits unowned, a team that does not know what is changing, or a manager trying to hold accountability and compassion apart as if they are opposites.
Start with the leadership work, not the intervention
Before gathering evidence, name the work managers must do well in your organisation. This is especially important where people are operating under pressure, through change, or across competing priorities.
A useful starting point is not “our managers need more skills.” It is a set of practical questions:
- Where are managers finding decisions difficult to make or explain?
- What conversations are being avoided, softened beyond usefulness, or handled without enough care?
- Where is accountability unclear between senior leaders, managers and teams?
- What is changing for staff, and do managers have the confidence to lead people through it?
- What does good leadership look like in the real conditions people are working in?
The answers will give your evidence page a centre of gravity. Without that, leadership development can quickly become a generic response to a specific problem.
Build the page around evidence executives can recognise
The strongest evidence page brings together signals that are already present across the organisation. You are not trying to prove that every problem is caused by managers. You are trying to make the leadership pattern visible enough for sensible action.
Consider evidence from workforce listening, employee surveys, exit themes, absence patterns, engagement conversations, performance reviews, change activity and feedback from senior teams. Look for repeated experiences rather than isolated incidents.
For example, managers may report that they are overloaded by operational demands. Staff may describe inconsistent communication. Senior leaders may notice that decisions take too long to become action. These are not separate issues if the common thread is that managers have not been given the clarity, support or space to lead well.
Use a simple evidence-page structure
A clear one-page or two-page evidence summary is often more useful than a lengthy report. The aim is to support a good conversation, not bury people in data.
A practical outline
- The business context. Describe the pressure, change, growth or organisational challenge managers are leading through.
- The manager-effectiveness gap. Set out what leaders and employees are experiencing. Use direct themes and existing evidence.
- The consequences of doing nothing. Be concrete. This may include delayed decisions, lower trust, inconsistent people management, weaker change adoption or avoidable strain on teams.
- The leadership conditions required. Define the behaviours and practices needed now. This is where compassion and accountability need to sit together.
- The development response. Explain why personalised, applied development is a better answer than a one-off event where the issue requires reflection, challenge and practice.
- The signs of progress. Agree what you will look for in day-to-day leadership, team experience and organisational follow-through.
Do not confuse activity with evidence of progress
Attendance at a development session is activity. A completed diagnostic is activity. Neither tells you whether a manager is leading differently when the pressure is real.
Better evidence of progress comes from the workplace. Are managers clearer about their priorities? Are they addressing difficult issues earlier? Do their teams understand decisions and changes? Are leaders taking responsibility for the conditions they create?
This calls for honest reflection. It also calls for a development process that stays close to a genuine leadership challenge rather than treating leadership as theory.
Make the case for personal work
Manager effectiveness is organisational work, but it is also personal. Leaders bring their habits, assumptions, strengths and pressure responses into every conversation. A manager can understand the organisation’s strategy and still struggle to hold a boundary, give direct feedback or build trust after a difficult decision.
This is why a meaningful development response needs more than broad content. It needs insight into how an individual leads, confidential space to think, honest challenge and a live opportunity to apply learning at work.
The aim is not a polished management style. It is a clearer, more confident and more intentional approach to leadership in the situations that matter.