San Jose Corporation Poultry Products Plant had supervisory personnel with the following functions: to undertake decisions to discontinue temporarily staff shift operations when situation require; to effectively oversee the quality control function at the processing lines in the storage of chicken and other products; to administer efficient system of evaluation of products in the outlets; to be directly responsible for the recall, holding and rejection of direct manufacturing materials; and to recommend and initiate actions in the maintenance of sanitation and hygiene throughout the plant. Are the supervisors considered confidential employees