In Ashley Furniture Industries, Inc., and Voces de la Frontera, the National Labor Relations Board (NLRB) ruled that the employer acted unlawfully when it instructed employees not to discuss various workplace issues. Section 7 of the National Labor Relations Act gives employees the right to engage in concerted activity for mutual aid and protection, including communicating among themselves about wages or other common concerns in the workplace. Federal law prohibits employers (both union and non-union companies) from interfering with, restraining, or coercing employees in the exercise of these rights. In this case, the company's human resources representative instructed certain employees that they could not discuss with anyone (inside or outside the company) the following: (1) a disciplinary infraction, (2) the receipt of a "no-match" letter from the Social Security Administration, and (3) the expiration of the employee's work permit. The NLRB found that the company did not have a legitimate and substantial interest in the confidentiality of the information and therefore held that the company's gag rules were an unlawful interference with the employees' rights to discuss workplace concerns.