It may. Pursuant to the NLRA, nonsupervisory employees (whether unionized or non-unionized) may have the right to refuse to work in conditions they believe to be unsafe. However, in order to refuse to work, the employee must have a “reasonable, good faith belief” that working under certain conditions would not be safe. Unionized employees undergo a separate analysis pursuant to Section 502 of the NLRA: refusal to work over safety concerns is protected for unionized employees if the assignment is “abnormally dangerous.” These employees must have a “good faith belief” supported by ascertainable and objective evidence that this working condition exists.