OPEIU Local 39 represents the following units:

• Credit Union National Association
• CUNA Mutual Group 
• IBEW Local 965
• Madison Gas & Electric
• NECA-IBEW Joint Apprenticeship & Training
• North Central States Regional Council of Carpenters
• Sheet Metal Workers Local 565
• South Central Federation of Labor
• WI Electrical Employees Benefit Fund, LLC
• Aspirus Riverview Hospital and Clinics 
• ND Paper
• Domtar 
• Verso Corporation
• Solarus
• Iron Workers Local 383
• North Central States Regional Council of Carpenters Training Fund

• Sonoco

• Center for Responsible Lending

• La Casa Norte

• IAMAW District 10

• IAMAW District Lodge 66

• Operating Engineers Local 139

• IBEW Local 14

• IBEW Local 953