Collective labour rights, including the right to organize and strike, were recognized in the principles of the International Labour Organization (ILO) as fundamental rights. Despite their importance, different countries enacted legislation that included a ban on police organization in trade unions or a ban just on police strikes. The right of police officers to organize and strike is of particular importance nowadays at a time of increased public scrutiny and large-scale protests over incidents of extra-judicial killing by police. There is a need to recognize collective rights for police officers in order to improve working conditions and organizational justice at work for them as a way of moderating officers’ perspectives of public hostility and improving their capability to carry out their duties. Another benefit of recognizing a right to organize is the union’s capacity to advance important values, including avoiding racism and violence and assuring the compliance of individual officers with the ethics and code of conduct expected from police officers. This article seeks to address the unique topic of the linkage between the collective labour rights of police officers and varieties of constitutionalism in these critical times. It introduces two potential approaches in this regard: (1) global labour constitutionalism; and (2) militaristic labour constitutionalism. The former implements international standards set by the ILO as a basis for constitutionalism while the latter emphasizes domestic issues and the need to maintain the public order and security of citizens. The article examines the possibility of applying global labour constitutionalism as a basis for recognizing collective rights for police officers.