Workers have to ask for a coworker to be present to use their Weingarten rights. Employers have no duty to tell workers about their rights. Because it is stressful when your employer calls you in for questioning, some workers carry a card that reminds them of what they can say to invoke their Weingarten rights. The card can say: I am now concerned that this interview could lead to discipline, or affect my personal working conditions. So, I respectfully request that a union representative or coworker of my choice be present at this meeting. Until he or she arrives, I choose not to participate in this discussion. This statement could save your job.