Professional Liability of Lawyers and Compensation Criteria

1. The fact

   The legal case culminating in the Supreme Court's recent decision concerns a client who sued their counsel following serious omissions in the execution of the professional mandate. According to reports from Cassazione.net and analyzed by Guida al Diritto, the lawyer failed to correctly re-summon a trial, leading to a final unfavorable judgment. The client, believing that such negligence had precluded the recognition of their rights, sued for damages based on contractual liability. In the first two stages of the merits, both the Tribunal and the Court of Appeal rejected the claim for damages. The judges noted that, although there was a professional error, the client had not provided sufficient evidence to show that, had the action been continued, the outcome would have been different. The appellant then turned to the Supreme Court, challenging the violation of the rules on the burden of proof and arguing that the loss of the possibility to defend oneself constituted compensable damage in itself.

2. The rules in play

   The normative core of the decision lies in the interaction between several articles of the civil code:

   1. Art. 1176 c.c.: defines professional diligence, stating that in the fulfillment of obligations inherent to a professional activity, diligence must be assessed with regard to the nature of the activity exercised;
   2. Art. 1218 c.c.: regulates the debtor's liability, requiring the lawyer to compensate for damages unless they prove the breach is not attributable to them;
   3. Art. 2697 c.c.: constitutes the key rule on the burden of proof, forcing the plaintiff to demonstrate the constituent facts of the claimed right, including the causal link between error and prejudice;
   4. Art. 2236 c.c.: limits liability only to cases of intent or gross negligence if the performance involves solving technical problems of special difficulty.

3. Case law

   The case law of the Supreme Court has consolidated the principle of the so-called counterfactual judgment. It is not enough to ascertain the lawyer's error; the judge must perform a posthumous prognosis to verify whether, without that error, the client would have obtained the desired benefit. The Court clarified that in the civil sphere, the certainty beyond any reasonable doubt typical of criminal law does not apply, but rather the rule of «more likely than not». This orientation establishes that compensation is due only if the probability of success of the original case was higher than 50%. If the chance of victory was minimal or merely hypothetical, the lawyer's breach remains a violation without compensable damage. The Supreme Court reaffirmed that the causal link between the omissive conduct and the loss of chance must be proven by the client, excluding any automatism that turns every procedural error into an indemnity obligation.

5. Analysis drafted and verified with edit.legal

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8. What it teaches professionals

   1. Document the prognosis: it is essential to provide the client with a written opinion on the real chances of success before starting any action, to mitigate future loss of chance claims.
   2. Deadline management: adopting digital protocols and double checks for re-summons and appeal deadlines drastically reduces the risk of indefensible formal errors.
   3. Transparency on the burden of proof: clearly informing the client that, in the event of a dispute, it will be up to them to prove the validity of the original claim discourages tactical litigation against the firm.

References: Art. 1176 c.c.Art. 1218 c.c.Art. 2236 c.c.Art. 2697 c.c.

Editorial oversight: Avv. Federico Papa·ICAMUpdated 17 September 2026Content drafted with AI support and subject to editorial source checks. Despite these controls, inaccuracies may remain: reports and rectification requests are welcome. Report a correction