Subcontracting Rules (EU)

EU subcontracting rules govern how a winning contractor may use subcontractors on a public contract, what the contracting authority can require in terms of disclosure and approval, and how the prime contractor remains fully liable for everything the subcontractor does under that contract.

What are Subcontracting Rules (EU)?

The EU Public Procurement Directive allows contracting authorities to require tenderers to state, at the point of submission, what proportion of the contract they plan to subcontract and which subcontractors they intend to use. This is distinct from relying on a subcontractor's capacity to meet selection-criteria-eu, though the two often arise together. Where a tenderer relies on a subcontractor's financial standing or technical track record to pass selection, that subcontractor must co-sign a formal capacity undertaking and may be required to submit its own espd covering exclusion grounds.

Once a contract is live, authorities may require the prime to notify any changes to subcontracting arrangements and may reject a proposed replacement subcontractor that fails exclusion grounds. Some member states go further and grant subcontractors a direct payment right against the contracting authority for work properly performed but unpaid by the prime, protecting the supply chain in insolvency scenarios. The prime contractor remains wholly liable to the authority for all performance, regardless of the subcontracting structure.

Why Subcontracting Rules (EU) matter for bidders

EU subcontracting rules affect both prime contractors and specialist suppliers. For primes, failing to disclose intended subcontracting at submission or proposing a subcontractor who fails exclusion grounds creates post-award problems, up to and including authority rejection of the arrangement. For specialists operating as subcontractors, the direct payment right available in some member states is commercially significant: it reduces exposure to prime contractor credit risk on large infrastructure and construction projects. Both parties should also check whether the authority has capped the subcontractable proportion, since some member states permit authorities to require that a defined minimum percentage of work is performed directly by the prime.

FAQ

Can an authority require that the prime performs a minimum share of the work directly?

Some member states allow authorities to set a self-performance minimum, but the EU directive does not mandate one across the board. Any such requirement must be proportionate and disclosed in the procurement documents.

Do subcontractors have to submit their own ESPD?

Where the prime relies on a subcontractor's capacity to meet selection criteria, that subcontractor must submit an ESPD covering its exclusion grounds. For other subcontractors not relied upon for capacity, the authority may request ESPD submission but it is not automatically required.

Is the prime contractor liable if a subcontractor underperforms?

Yes. Under EU procurement rules, the prime remains fully liable to the contracting authority for all aspects of contract performance, including the subcontracted portions, regardless of where the fault lies.