Former McDonald's (MCD) employees are accusing the fast-food giant of firing them for joining labor unions. A worker group is alleging that nine employees at various McDonald's locations in New York were fired for their union involvement, according to Bloomberg. The fast-food chain is also being accused of suspending employees, cutting their hours and threatening them with termination due to their union ties. The National Labor Relations Board is now investigating. The report says the case has serious implications for how parent companies may be required to better monitor how franchises treat employees. TheStreet's Brittany Umar has details from New York.