1. Who are confidential employees? 2. Who are the confidential employees barred from the right to self-organization? 3. Explain the rational basis behind the prohibition of confidential employees from enjoying the right to self-organization. 4. Explain the cautions the Supreme Court mentioned behind the law allowing Security guards from joining a labor union. 5. If an employer or a labor union committed ULP, what kinds of liabilities do they incur?