As a preliminary, it is specified that the fees are fixed by mutual agreement with the client before the first diligences are being carried out. This agreement and the fees are evidenced by a letter of engagement, which specifies the scope and the methods of restitution of the lawyer's diligences, and by a fee agreement.
In any event, a provision is systematically requested when the engagement letter and the fee agreement are delivered and before any diligences is being carried out.
Different billing methods can be considered: