In Switzerland, employers and employees are requested to settle together the amount of risk and priorities for each industrial activity, for the needs of a federal commission in charge of occupational health specialists. After our results, this aim will be difficult to achieve, since the feelings of employers and employees on similar safety problems vary widely. In particular, chemical risks did not evoke similar reactions in employers and employees of the French and of the German-speaking regions. In order to help employers and employees to reach a consensus, a method will be developed in a near future.