Section 2.75.020 of the San Mateo County Ordinance Code require that each Department Head formulate rules relating to incompatible activities and outside employment.  The purpose of the rules is to prohibit County employees from engaging in any employment, activity, or enterprise which is inconsistent, incompatible, in conflict with, or inimical to the duties imposed on such employees by virtue of their employment with the County of San Mateo.  These rules are promulgated in addition to the Conflict of Interest Code that applies to designated employees.  Such employees must submit annual statements of economic interests as required.