In order to understand the major role played by a special body of ‘judicial experts’ in litigation and, to a certain extent, in arbitration in France and several civil law countries having the same judicial tradition, it is first important to outline four key features of the judiciary.


First, most judges in France and the civil law systems influenced by France typically have no particular expertise in construction matters. They are professional judges whose professional career often begins at the age of 25 as court assistants. They are highly qualified in general law and procedure but they are not specialists in construction law. Indeed, only a few leading courts in France have a special department for construction matters.


Secondly, it is exceptional for hearings in even the most complex cases to last more than a few hours. This is due, inter alia, to a substantial difference with the common law world in producing evidence. Even where the Code of Civil Procedure permits witness evidence, it is highly exceptional to see witnesses in the court room and the inquisitorial procedures of witness examination and cross examination in the common law sense are not permitted.


Thirdly, common law discovery procedures are not allowed. The rules of evidence are organized in a very precise manner. Although it may be possible to obtain an order from the court directing a party to produce a particular document, if the document is not produced, the court will simply take this lack of evidence into account in its final judgment.


Fourthly, it is essential for judges both to have the benefit of external expertise and to ensure that their reliance upon this expertise is the result of a process that is fair to the parties involved. Although nothing prevents a party from being assisted by its own technical expert, the judges generally do not rely on party-appointed experts since there is a specific institution dedicated to identifying highly qualified professionals: the judicial expert system.


The judicial expert must be a highly experienced and well-recognized professional who, after many years of practice, may apply for the status of judicial expert. This status is very strictly regulated at various levels, in order to ensure professionalism, objectivity and fairness in the judicial process, as the judicial expert plays a leading role in court decisions in the vast majority of construction disputes in France.


As a practical matter, the judicial expert organizes meetings with the parties as well as site and other visits, requests documents from the parties, and drafts a detailed report for the tribunal, including exhibits. Although the judicial expert has no authority to advise the judge as to the ultimate outcome of the case, his or her influence on the decision is critical since, at the request of the judge, he or she will have identified all the relevant facts and given his or her technical opinion; this is usually the basis for assessing both liability and quantum.


When the judge receives the judicial expert’s report, he or she cannot amend it, and the expert is very rarely examined during the hearing. However, this does not prevent a party from interpreting the expert’s report or challenging facts contained within it, but it is for the party’s lawyer to make all the arguments during the hearing. That judges largely defer to the expert is confirmed by the fact that, in most cases, the judge will simply confirm the conclusion of the expert’s report, even though the report is not, strictly speaking, binding upon the judge.


Nonetheless, the judge is not powerless if he or she has doubts regarding the performance of the judicial expert, and in some cases the judge participates in the expert’s investigation. For instance, the judge may attend meetings organized by the expert and request explanations. In addition, the judge may, if he or she considers it useful, hear evidence from a witness upon the request of the judicial expert or any party. The expert may also request a hearing by the judge. Lastly, the judge may always request that the expert complete, clarify or explain the content of his or her report and its conclusions in writing or at the hearing. If the judge believes that the report lacks clarity, he or she may hear the expert, the parties being resent or summoned.


However, the system of judicial experts is not without its critics, especially regarding the method for producing evidence and avoidance of conflicts of interest. In this respect, the French system could learn from the common law world. For instance, the following improvements are often advocated:


  • a party should be authorized to request the hearing of a witness to facilitate the judge’s understanding of important technical aspects in complex cases.
  • the judicial expert should transmit his or her draft report to the judge and the parties… in preparation for the hearing; and
  • a party-appointed expert should be permitted to comment in writing on the final report of the judicial expert before the hearing.


In conclusion, in the French legal system, which has influenced several other civil law countries, the judicial expert often plays a leading role in the judge’s decision. While not without its critics, the system is one that lawyers from other jurisdictions – particularly common law countries – need to understand when advising clients with disputes pending in civil law countries or before arbitrators with civil law backgrounds.


This article was published in Construction Law International, Volume 8 Issue 2, June 2013. To read the full article along with cites and notes, please visit the GcilA Knowledge Center at