Strikes are a method used by labour unions and employees to pressure employers and government authorities to address their grievances before they return to work.
Problems and Purpose
Strikes refer to a "work stoppage, caused by the mass refusal of employees to work," in response to grievances or to "pressure government to change policies." 
Origins and Development
Participant Recruitment and Selection
How it Works: Process, Interaction, and Decision-Making
Influence, Outcomes, and Effects
Analysis and Lessons Learned
2010 University of Puerto Rico Strike
 Wikipedia Contributors, "Strike Action," https://en.wikipedia.org/wiki/Strike_action
Civil Rights and Labor History Consortium, University of Washington - Strikes/Labour History Encyclopedia
go2HR - Strikes, Lockouts, Picketing and Replacement Workers
The Effect of Labour Relations Legislation on Strike Incidence
On the Political Economy of Long-Run Trends in Strike Activity: https://www.cambridge.org/core/journals/british-journal-of-political-science/article/on-the-political-economy-of-longrun-trends-in-strike-activity....
"Strike-Proneness" and Its Determinants: https://www.journals.uchicago.edu/doi/abs/10.1086/221532
The Challenge of Labour in China - Strikes and the Changing Labour Regime in Global Factories: https://www.taylorfrancis.com/books/9780203849750