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Interim management at the service of global performance

Published on 28 August 2025
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Le interim management is a concrete response to the transformation challenges facing companies. To remain competitive, relevant and value-creating, companies need to cultivate a constant capacity to evolve. Companies that rest on their laurels risk becoming obsolete, while those that adapt gain in performance. Successfully supporting change is therefore no longer an option: it is an essential condition for their long-term survival. Julie Garnier, certified coach and trainer.

Interim management is symbolised by a man with his back to a white wall. On the wall, two arrows point in opposite directions. One indicates old way. The other points to the new way.

Against a backdrop of accelerating technological change, far-reaching organisational transformations and growing environmental and societal pressures, organisations need to adapt if they are to remain successful. But this dynamic of change is often accompanied by resistance: team fatigue, emotional wear and tear, loss of reference points and doubts about their ability to evolve.

70 % of change initiatives fail because of ineffective change management.

Change Management Toolkit from the University of Berkeley

Calling on the services of an interim manager can increase the likelihood of successful change management.

The benefits of interim management in an ever-changing world

Interim management involves temporarily entrust leading a strategic project or managing a complex situation an experienced external manager. In particular, he or she is involved in digital, environmental or organisational transition, or change of scale. They coordinate and cooperate with internal teams.

The benefits of an interim manager

  • Immediate operationality
  • Tailored expertise
  • Neutrality and an external viewpoint
  • A fresh look promoting openness
  • Quickly visible results
  • Timed intervention
  • Improving overall performance: economic, financial and operational

Concrete example of an interim management assignment

In a financial services company with around 600 employees, an interim manager was appointed to support the teams in integrating artificial intelligence into their business processes.

The aim of her six-month assignment was to facilitate the adoption of AI tools, while maintaining the commitment, motivation and cohesion of the teams.

To achieve this, it has set up participative workshops.

Diagram showing the 4 stages of participative workshops set up as part of an interim management assignment: catharsis, identification of the team's strengths, brainstorming, exploration and action plan.

Here are the results after 4 months :

  • Greater collective involvement
  • Easing initial fears
  • Feeling heard and considered
  • Self-confidence and collective confidence
  • Strengthened team cohesion
  • Increased motivation
  • Implementation of practical, operational and realistic solutions focused on the real needs of teams

Outsource interim management or mobilise in-house skills? Make the right choice for your transformation!

CriteriaOutsourceMobilising internal resources
DeadlineFast, immediately operationalLonger, skills development required
ExpertiseExperienced specialists, cutting-edge skillsKnowledge of company culture and processes
FlexibilityTargeted and temporary interventionLess flexible, requires internal adjustments
CostOften higher initial investmentOptimising existing resources
NeutralityObjectivity, a fresh look with no political stakesRisk of bias or internal resistance
Cultural impactLess culturally integratedStrengthens commitment and corporate culture

5 out of 8 of the most effective approaches to successful transformation involve employee engagement. McKinsey, 2010

Here are the actions implemented by companies in which at least 70 % of respondents stated that their company had achieved its transformation objectives:

Actions involving employee commitment1The managers made sure that the staff on the ground felt responsible for the change.
2Roles and responsibilities were clearly defined, enabling everyone to feel accountable for the results.
3The organisation was mobilised and energised by ongoing communication and involvement.
4Our best talents have been mobilised to lead the most critical aspects of the transformation.
5The leaders embodied the expected changes through their own behaviour.
Actions not involving employee commitment6The transformation has been clearly structured, with stages that are easy to understand.
7Clear, unambiguous indicators and milestones have been put in place to rigorously monitor progress and impact.
8The right information was available at the right time to enable managers to monitor the progress of the transformation and resolve any problems if necessary.

 How do you choose the right approach for your transformation?

 The questions you need to ask yourself :

  • First of all, what is the objective of the project? One-off transformation or cultural evolution?
  • And do you have the necessary skills in-house?
  • Does intervention require neutrality and objectivity?
  • How quickly should change take place?
  • What level of internal support is required?
  • What is the allocated budget?
  • What is the expected ROI?
  • Finally, does the project present a high level of risk?

Developing the essential skills needed to lead change

What skills are needed for effective transformation?

To support change, leaders and managers, whether at local, intermediate or strategic level, play a key role. They must guide, structure, reassure and mobilise. This requires them to develop a range of cognitive, organisational, emotional and relational skills.

  • Behavioural skills: behavioural flexibility and adaptability
  • Organisational skills: structuring, planning, implementation, steering, monitoring and adjustment
  • Cognitive skills: ability to diagnose and assess complex situations, manage complexity and make decisions
  • Intrapersonal skills: managing emotions and stress, self-confidence, resilience
  • Interpersonal skills: active listening, empathy, team mobilisation and commitment, communication

The practical benefits of training

Individuals:

  • First and foremost, it means building confidence in your ability to support change
  • But we also need to understand resistance mechanisms (Kübler-Ross model, for example) so that we can put challenges into perspective, manage stress better and communicate clearly.
  • It also means equipping ourselves with tools and methodologies for diagnosing, structuring and managing change
The stages of change according to Kübler-Ross

Collectively :

  • Strengthen team cohesion, support and mutual assistance through participative workshops that facilitate cooperation, create more relaxed forums for exchange, encourage buy-in and reinforce the collective dynamic.

Impact on the organisation :

  • Reducing the risks associated with change
  • Boosting overall performance
  • Giving teams greater agility and the ability to support change

Key figures for interim management

Graph: 64 % of employees have the skills needed to support successful change, but 25 % are actually adapting their working habits.

This shows the importance of developing practical, applicable skills.

Graph: 95 % of respondents consider skills development to be crucial and 5 % of organisations feel prepared.

Hence the need to structure appropriate training pathways.

Graph: 34 % of success with a traditional strategy and 58 % of success with a more collaborative open source strategy.

Collaborative change management strategies have increased the success rate from 34 % to 58 %, demonstrating the benefits of using participative tools.

In conclusion, in the face of constant change, the survival of organisations depends on their ability to support change by mobilising all the company's resources, both internal and external. Interim management, mobilising teams and developing skills: there are several solutions to help you not only adapt... but thrive.

Our expert

Julie Garnier

Management, project management, change management

A certified coach and trainer, she supports organisations and teams in developing their skills and [...].

field of training

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