France retail giants defy Sunday trading ban and open for business Two of France's retail giants Leroy Merlin and Castorama defied a court order and opened for business on Sunday. The shops in Paris and some of the capital's suburbs had been told on Thursday not to open their doors and now face fines of up to 120,000 euros per store. The move has led to hints from the French government it may be ready to negotiate over Sunday trading laws. More about: France, Retail trade