9.1. No decree may impose(1) a provision of the agreement pertaining to the activities, administration or funding of an association of employees or an employers’ association;
(2) a wage increase applicable to an effective wage rate that is higher than the wage rate established in the decree;
(3) the application of a wage rate that is higher than the wage rate established in the decree; or
(4) minimum prices to be charged to the public for certain services.