"The financial sector from my point of view ... stands ready, I have a doubt about the corporate sector," Lemierre told a conference at the French central bank.

"Large companies are ready, they have contingency plans, they have created stocks of pharmaceutical products and so forth. Mid-sized and small companies are not ready and (there) will be whatever happens a disruption for them," he added.

(Reporting by Leigh Thomas; editing by John Irish)