A mashgiah may supervise any type of food service establishment, including slaughterhouses, food manufacturers, hotels, caterers, nursing homes, restaurants, butchers, groceries, or cooperatives. The mashgiach usually works as the on-site supervisor and inspector, representing the kashrut organization or a local rabbi, who actually makes the policy decisions for what is or is not acceptably kosher. Sometimes the certifying rabbi (Hebrew: רב המכשיר, rav hamachshir) acts as his own mashgiach; such is the case in many small communities.