Choose THREE] Permissible actions related to concerted activities An employer restricts employees from discussing their wages, benefits, or employment conditions (while the employer permits employees to talk about other non-work-related subjects). Employees collectively refuse to work overtime to protest the employer's decision to reduce their scheduled hours. An employee talks about common workplace issues on social media platforms, such as Facebook, Twitter, etc., even if these conversations may harm the employer's reputation. Employees wearing buttons, t-shirts, or other paraphernalia advocating a particular cause for their mutual aid or protection