Article R4451-89 of the French Labour Code
I.-In exceptional circumstances, when collective and individual protection measures are unable to guarantee that workers’ exposure remains below the exposure limit values provided for in Article R. 4451-6, the employer shall request authorisation to exceed them from the labour inspection officer referred to in Article L. 8112-1. II.-The employer shall demonstrate that there is no possible alternative to exceeding the values referred to in I, given the exceptional nature of…