Takeover of a public service delegation: securing tiling and risk management

Contents

• Why the takeover of a DSP concentrates the risks
• Contractual tiling: what happens before the changeover
• An HSE position vacant at the critical

moment

• A sorting centre and a recovery unit taken over in three months
• Why entrust this period to interim

managers

• Frequently asked

questions

• Conclusion
• Sources

 

Why the takeover of a DSP concentrates the risks

A public service delegation commits the local authority and the operator over long periods. The rules for reasonable depreciation of investments often push contracts beyond five years, as this dossier on the legal framework of PSDs reminds us. However, each change of holder reopens a period of fragility that is rarely measured at its true value.

Recent case law confirms this. An administrative court of appeal annulled a delegation after finding that substantial clauses had been added after the vote of the deliberative body. These clauses covered nearly 45% of the estimated revenue of the contract. The award phase is therefore never an administrative detail.

On the ground, the takeover also affects the teams. When the buyer refuses to continue certain transferred employment contracts, social case law now sanctions this refusal. It assimilates it to a dismissal without real and serious cause. The human subject weighs as much as the technical subject in a DSP takeover.

 

Contractual tiling: what is at stake before the changeover

Tiling refers to the period, often contractual, during which the old and new operators coexist before the actual start of operations. On large waste treatment and energy recovery infrastructures, this window rarely exceeds a few months.

During this period, several projects move forward in parallel and easily collide if no one manages them methodically:

• the takeover and training of the former operator’s teams, often worried about the change of employer;

• the adversarial audit of the installations, stocks and commitments made to the community;

• the upgrading of procedures to the standards of the new operator;
• the preparation of the changeover date, set contractually and non-negotiable.

The waste treatment sector illustrates the scale of the industrial challenges at stake. The sector represents 11.8 billion euros in turnover and nearly 55,000 jobs in France. A failed handover on this type of infrastructure is never limited to a scheduling problem.

An HSE position vacant at a critical time

This is often where the problem lies. The HSE position of the former operator becomes available even before the new holder has finished recruiting his prevention manager. The site changes hands precisely when no one is responsible for controlling the risks on a daily basis.

However, the regulatory context leaves no margin. In 2025, the Inspectorate of Classified Facilities recorded 1,534 incidents and accidents, an increase of 23.3% over one year. Of these, 74 events concerned Seveso-classified sites.

If the incoming operator takes over a classified site, he also inherits the documentary history and the commitments made to the prefecture. He also inherits a safety culture that he is not yet familiar with. You cannot wait three months to fill this gap.

An interim manager specialising in industrial risks fills this hole in the racket. He structures the procedures from day one, trains the teams taken over and serves as a single point of contact for the administration.

 

A sorting centre and a recovery unit taken over in three months

A player in environmental services has won a public service delegation for an energy recovery unit and a sorting centre. The contract provided for the construction of a new centre with a capacity of nearly 40,000 tonnes per year. This scale corresponds to that of the most recent sorting centres commissioned in France.

The contract required a fixed date of operation, preceded by a three-month tiling with the outgoing operator. An interim operations manager took full responsibility for this phase: taking over the teams, auditing the facilities, bringing procedures into compliance.

At the same time, the position of HSE manager remained vacant at the most sensitive moment of the takeover. An interim manager dedicated to industrial risks took over this scope: safety diagnosis, corrective action plan, training in the standards of the new operator. The start of operations took place on the scheduled date, without any interruption in service.

 

Why entrust this period to interim managers

A takeover of a DSP does not leave a second chance. The changeover date is set in the contract, and the delegating local authority does not tolerate any interruption of service. Calling on a director of interim operations secures this period without waiting for a permanent recruitment to be completed.

At WAYDEN, the pool of 8,000 qualified managers makes it possible to present candidates within 48 to 72 hours. Deployment is possible in less than a week. The profiles mobilized generally have 15 to 25 years of experience, under the supervision of an associate director of the firm.

A relay manager brings an immediate ability to execute, without a learning curve on the fundamentals of the profession. Our experience in industrial crisis management and on HSE issues in industry directly feeds into this type of mission.

 

Frequently asked questions

What is tilling between two operators of a public service delegation?

Tiling refers to the period of coexistence organised between the outgoing operator and the incoming operator, before the actual start of operation. It is used to transfer teams, audit the installations and prepare for the changeover without interruption of service for the local authority.

How long does a tiling process usually take on an industrial DSP?

The duration varies depending on the contract and the complexity of the site, but it is most often measured in weeks or a few months. On waste treatment infrastructures, a window of two to three months remains common.

What happens to the staff of the former operator when a DSP is taken over?

The transfer of staff is subject to specific rules of labour law. The new operator must generally take over the contracts concerned, otherwise he or she will be exposed to litigation for dismissal without real and serious cause.

Why is the HSE position often vacant at the time of the takeover?

The departure of the HSE manager from the former operator often coincides with the recruitment schedule of the new holder. The latter has not always identified his prevention manager before the changeover date. This discrepancy in the schedule leaves a gap at the most exposed time.

 

Sources

• Dairia Avocats, “Loss of market and takeover of staff: the buyer’s refusal to continue the contract”, published on 13 May 2026: case law on the transfer of staff in the event of a change of ownership.

• DSAP Rivière Avocats, “Procurement of a DSP: beware of substantial modifications”, published on 7 October 2025: decision of the CAA of Marseille on the legal security of the award.

• Maires de France / Seban Associés, “The public service delegation”, published in April 2025: regulatory framework for the duration and publicity of PSD contracts.

• FNADE, “Accelerating the recovery of waste into renewable and low-carbon gases”, published on 25 September 2025: economic weight of the waste and energy sector in France.

• Ministry of Ecological Transition, “Assessment of the action of the inspection of classified facilities 2025”, published on 6 July 2026: number of incidents, accidents and inspection visits to ICPEs.

• NextWaste, “2025: five new sorting centres for redesigned waste management”, published on 15 January 2025: scale and budget of new sorting centres comparable to the mission case.