Generally, a work activity which is considered to be self-employment under U.S. Social
            Security law is also considered to be self-employment under Greek law. In certain
            cases, however, a person may be engaged in a work activity that is considered self-employment
            by one country but employment by the other. For example, ordained ministers and members
            of a board of directors are usually considered self-employed under U.S. law but are
            usually employees under Greek law. The following subsections explain how coverage
            is assigned in each situation.