union status, domestic partnership status, affectional orientation, gender identity or expression, genetic information, military service, or mental or physical disability, AIDS and HIV related illnesses and atypical hereditary cellular or blood traits. Laws restricting unions , twenty-six states plus Guam prevent trade unions from signing collective agreements with employers requiring employees pay fees to the union when they are not members (frequently called "right-to-work" laws by their political proponents). In 2010, the organization "Save Our Secret Ballot" pushed four states: Arizona, South Carolina, South Dakota, and Utah to pass constitutional amendments to ban Card check. Enforcement of rights United States Department of Labor National Labor Relations Board Ford Motor Co. v. NLRB, 305 U.S. 364 (1939) the right of the NLRB to withdraw its submissions to the Court were at the court's discretion In re NLRB, 304 U.S. 486 (1938) to enforce an order, the NLRB must file a petition and transcript with the courts Equal Employment Opportunity Commission Elgin v. Department of Treasury, 567 U.S. ___ (2012) 6 to 3, under the Civil Service Reform Act of 1978 federal employees have no recourse to the federal courts over wrongful discharge cases, but must instead go to the Merit Systems Protection Board. United Mine Workers of America v. Gibbs, 383 U.S. 715 (1966) state and federal jurisdiction in labor disputes See also Labor law European labour law UK labour law Social law Child labor laws in the United States Organizations American Rights at Work, a charity supporting union rights Congress of Industrial Organizations International Society for Labor Law and Social Security National Labor Federation, an organization supporting workers outside the protection of federal labor laws United States Department of Labor, includes a list of labor legislation Notes References Books JR Commons, Principles of Labor Legislation (1916) JR Commons, History of Labor in the United States (Macmillan 1918) vol I and vol II R Covington, Employment Law in a Nutshell (3rd edn 2009) A Cox, DC Bok, MW Finkin and RA Gorman, Labor Law: Cases and Materials (2011) KG Dau-Schmidt, MH Malin, RL Corrada and CDR Camron, Labor Law in the Contemporary Workplace (4th edn 2009) MA Rothstein and L Liebman, Employment Law Cases and Materials (7th edn Foundation 2011) G Rutherglen, Employment Discrimination Law: Visions of Equality in Theory and Doctrine'' (3rd edn 2010) Articles JM Feinman, 'The Development of the Employment at Will Rule' (1976) 20(2) The American Journal