Personal papers donated by Labor leaders, attorneys, arbitrators, and rank-and-file workers, and labor rights supporters.
- Labor Unionists - Papers of individuals who were labor union officers, members, and activists.
- Labor Scholars and Researchers - Papers of academics, authors, and other researchers who investigated labor history and the lives of workers. Some of these collections contain the research files and manuscripts of published works.
- Labor/Civil Rights Activists and Supporters - Papers of individuals that advocated equality in the workplace, fought discrimination on the job, or advocated new pro-labor sociopolitical relations but may not have been members of labor unions.
- Workers' Occupational Histories - Occupational histories of individual workers. Many of these collections contain narratives or documentation of their worklives.