Article R7227-22 of the French General Code of Local Authorities
Any councillor to the assembly or any executive councillor, governed by Titles I to IV of the general statute of the civil service must, when they wish to benefit from the training leave provided for in article L. 7227-13, submit their request in writing to the hierarchical authority to which they report at least thirty days in advance, specifying the date and duration of the absence envisaged for this reason,…