I have seen many, many posts about where “Employers” claim or say that, discussing your wages at work with your co-workers is not allowed or is against their policy. This is in-fact false and the employers are telling you a lie. According to the National Labor Relations Board (NLRB) it is your 100% right to discuss your wages at work, during break, etc. This is your right as an Employee whether you are represented by a union or not.
Under the National Labor Relations Act (NLRA or the Act), employees have the right to communicate with other employees at their workplace about their wages. Wages are a vital term and condition of employment, and discussions of wages are often preliminary to organizing or other actions for mutual aid or protection.
If you are an employee covered by the Act, you may discuss wages in face-to-face conversations and written messages. When using electronic communications, like social media, keep in mind that your employer may have policies against using their equipment. However, policies that specifically prohibit the discussion of wages are unlawful.
You may have discussions about wages when not at work, when you are on break, and even during work if employees are permitted to have other non-work conversations. You have these rights whether or not you are represented by a union. https://www.nlrb.gov/about-nlrb/rights-we-protect/your-rights/your-rights-to-discuss-wages
According to the NLRB (National Labor Relations Board), it is UNLAWFUL for the Employer to prohibit the discussion of wages at work. So remember, you have every right to discuss your wages at work and it doesn't matter what the employer policy states, there is no law or even at the federal level that prohibits the discussion of wages at work.
If your Employer fires you for discussing your wages at work, you know what to do. Report it.