Interim managers: the five moments when waiting costs more than acting

The finance director post has been vacant for four months. No one on the board says it out loud, but the quarterly close rests on a senior accountant who has never presented a figure to a bank. This scenario is far from unusual in Belgian companies, and it costs more than most directors realise.

Interim management is too often seen as a last resort, something to be activated once everything has already gone wrong. That is a misreading. Used well, it is a governance tool: it brings a function or a project back under control while the company decides what it really wants.

The hidden cost of a vacant post

Recruiting an executive takes time: defining the need, searching, interviewing, negotiating, then waiting out the notice period with the chosen candidate's current employer. For a senior profile, that notice period easily runs to several months. Between one person leaving and the next actually arriving, the company operates in degraded mode.

This degraded mode appears on no budget line. It takes the form of postponed decisions, teams compensating to the point of exhaustion, and partners (the bank, the statutory auditor, key customers) who no longer know whom to speak to. That is precisely what makes it dangerous: nobody quantifies it, so nobody addresses it.

The interim manager answers this specific problem. They can be operational quickly, they are used to arriving in a situation they did not choose, and their mandate has a known end date from the outset.

Five situations where it makes sense

1. The sudden departure of a key executive

Resignation with no real notice, long-term illness, a falling-out with the shareholder: the result is the same. A central function loses its head overnight. Cover provided by an already overstretched colleague holds for a few weeks, rarely longer.

In this case, the interim manager's mission is twofold. They ensure continuity, but they also prepare the ground for the permanent hire: having seen the organisation work from the inside, they clarify what the role genuinely requires. Many job descriptions are rewritten after such an assignment, and that is good news.

2. Recovery or turnaround

Tight cash, eroding margins, a bank asking for a plan: the situation calls for fast and sometimes unpopular decisions. An incumbent leader, close to the teams and carrying the company's history, often finds them hard to take.

An external manager has no personal loyalties to repay inside the business. They can ask the questions nobody else asks, close a loss-making activity, renegotiate a contract. In Belgium, they will also have to work within social dialogue, works council structures and information and consultation procedures. A profile that has never worked in this framework is the wrong choice, whatever their experience elsewhere.

3. The transformation project the organisation cannot carry alone

An ERP change, a sales reorganisation, a compliance programme, the opening of a new site: these projects demand energy and availability that the existing teams do not have, because they are keeping the day-to-day business running.

The classic trap is to add the project to the workload of a manager who is already saturated. The project advances in fits and starts, the core business suffers, and six months later you have lost on both fronts. A dedicated interim manager, with a clear scope and decisions they can take alone, avoids this dilution.

4. Integration or separation after a transaction

After an acquisition, a merger or a partial disposal, you have to steer a period in which two cultures, two systems and two ways of making decisions coexist. This is a moment when good people leave if nobody tells them where the company is heading.

Because they belong to neither camp, the interim manager is often better placed to arbitrate. They have no favourites and no grudges. Their mandate must nonetheless be very precise about what they decide and what they escalate to the board.

5. The succession that is not yet ready

In family-owned or founder-held companies, succession is sometimes prepared for years without materialising. The leader wants to step back, but the designated successor is not yet ready, or has not yet won the support of the teams.

An interim manager can hold the role during the handover period, secure operations and coach the future leader without exposing them too early. This solution requires a good understanding with the family or the shareholder, and a time-limited mandate, otherwise the transition becomes permanent.

What an interim manager is not

They are not a consultant. A consultant recommends; an interim manager decides and takes responsibility. They sign, they report to the board or the shareholder, and they are judged on results.

Nor are they a cut-price executive. Their daily rate is often higher than the equivalent cost of an employee, which is normal: they can be mobilised quickly, with no learning curve, and without a long-term commitment. The right comparison is not salary, it is the cost of the vacancy or the delay.

Finally, they are not a saviour. If the strategy is unclear or the shareholder is not aligned, no stand-in executive will make up for that gap.

Scoping the mission: four non-negotiables

A measurable objective at six months

‘Stabilise finance’ is not an objective. ‘Deliver a monthly close in ten working days, present a 13-week cash flow plan to the bank, and hand over an approved recruitment brief’ is one. At the deadline, the board must be able to say whether the mission has succeeded.

Written powers

Who signs what, up to what amount, under which delegation? Under Belgian company law, the split of powers between the board and management depends on the articles of association and the delegations granted. An interim manager without a clear delegation is an expensive spectator. Have your legal adviser validate this point before day one.

A secure legal status

Most interim managers work through their own company, under a services agreement. The point to watch is how the relationship is characterised: if, in practice, the person is subject to hierarchical authority like an employee, there is a risk of reclassification as employment. This should be dealt with by an employment law specialist, not at the end of the mission.

A planned exit

From the start, define the end: date, criteria, handover. A mandate with no horizon creates dependency and sends the wrong signal to the teams. A good interim manager starts preparing their own departure in the first week.

The role of the board

The board does not have to select the interim manager on its own, but it must settle one question upfront: are we trying to fill a gap or solve a problem? The answer changes the profile sought, the duration and the governance of the mission.

It should then appoint a single point of contact for the interim manager, often the chair or a lead director, and set a short reporting rhythm at the beginning. A monthly board update is often too infrequent for the first few weeks.

Your next step

This week, take an hour with your chair or your CEO and list the functions and projects that, if they stopped tomorrow, would put the company in difficulty within 90 days. For each one, answer three questions in writing: who can carry it today without neglecting something else, what happens if that person leaves or the project stalls, and what result would be expected at six months.

If even one of the three answers is vague, you have a candidate for an interim assignment. Write a one-page mandate setting out the objective, the powers, the reporting line and the end date, then submit it to the board before contacting anyone. The best interim manager on the market will be of no use to you if you do not know what you are asking them to do.