Valid DURC but the subcontractor does not pay wages: who is liable

In brief: the main contractor is jointly liable with the subcontractor for wages, severance pay (TFR) and contributions not paid to the workers employed on the contract, within two years from the end of the contract (art. 29, paragraph 2, D.Lgs. 276/2003). A subcontractor's valid DURC on its own does not exclude this liability: it certifies social-security compliance as of a date, but does not guarantee that wages were actually paid to individual workers.

What the law says exactly

Art. 29, paragraph 2, of D.Lgs. 276/2003 provides that the client (committente), where it is an entrepreneur or employer, is jointly liable with the contractor, and with each of any subcontractors, within two years from the end of the contract, for paying workers their wages — including the severance pay (TFR) portions — and the social-security contributions and insurance premiums due in respect of the period of performance of the contract. The worker may act directly against the client (or against the main contractor, in the case of a subcontract) without first having to pursue their direct employer.

Why a valid DURC is not sufficient proof

The DURC (Documento Unico di Regolarità Contributiva, the Italian single certificate of social-security compliance) checks the regularity of mandatory contribution and insurance payments to INPS (the national social-security institute), INAIL (the national workplace-insurance institute) and casse edili (the construction-sector welfare funds) as of a given date — it does not check that net wages were actually paid to individual workers. A subcontractor can be compliant on contributions and at the same time be late or in default on the direct payment of wages: these are two distinct obligations, verified by different sources. Case law (including rulings of the Court of Ascoli Piceno and of the Court of Appeal of Ancona) has confirmed that a valid DURC does not release the contractor from joint liability under art. 29.

How to reduce the risk in practice, beyond the DURC alone

• Check the subcontractor's financial strength before awarding the work — balance sheet, protests, payment behaviour towards other suppliers — see the dedicated guide.
• Request direct proof of wage payment (receipted payslips, bank transfers) periodically during the performance of the works, not just the DURC.
• Monitor the subcontractor over time, not only at contract signing: a subcontractor that is compliant when the works begin can see its financial situation deteriorate while the site is still open.

The limits of this protection

No preventive check fully eliminates the risk of joint liability, which is provided for by law regardless of the contractor's diligence in choosing its subcontractor — it does, however, reduce the likelihood that the risk materialises, and puts you in a position to discover a problem while it is still manageable, not after the works are complete.