What term describes employees taking collective action to address grievances with management?

The term that describes employees taking collective action to address grievances with management is industrial action. This term encompasses various forms of collective action that can be taken by employees, such as strikes, work stoppages, or other organized efforts to push for better working conditions, wages, or other changes in their employment situation. It indicates a tactical response to unresolved issues where employees unite to amplify their voices and concerns to be heard by management.

Unionization, while related, specifically refers to the process of forming or joining a union, which may lead to industrial action but is not the action itself. Collective bargaining is the negotiation process between employers and a group of employees (often represented by a union) to agree on terms of employment. Employee advocacy refers to the broader efforts to support and promote the interests of employees, which may not necessarily involve collective action against management. Therefore, industrial action is the most precise term describing the scenario in question.