In the broader field of thanatology, scholars investigate rituals of dying, attitudes toward death, evolving trajectories of life expectancy, and more. Applying a lens of social class means studying similar themes but focusing on the men, women, and children who worked for wages in the United States. Working people were more likely to die from workplace accidents, occupational diseases, or episodes of work-related violence. In most periods of American history, it was more dangerous to be a wage worker than it was to be a soldier. Battlegrounds were not just the shop floor but also the terrain of labor relations. American labor history has been filled with violent encounters between workers asserting their views of economic justice and employers defending their private property rights. These clashes frequently turned deadly. Labor unions and working-class communities extended an ethos of mutualism and solidarity from the union halls and picket lines to memorial services and gravesites. They lauded martyrs to movements for human dignity and erected monuments to honor the fallen. Aspects of ethnicity, race, and gender added layers of meaning that intersected with and refracted through individuals’ economic positions. Workers’ encounters with death and the way they made sense of loss and sacrifice in some ways overlapped with Americans from other social classes in terms of religious custom, ritual practice, and material consumption. Their experiences were not entirely unique but diverged in significant ways.