Union Bargaining Agreements & Wage Rates

WUCA maintains a strong and collaborative relationship with Operating Engineers Local Union 139 and Wisconsin Laborers Local 113 through established collective bargaining agreements. These agreements ensure fair wages, safe working conditions, and comprehensive benefits for union members while promoting a harmonious and productive work environment. By partnering with these unions, WUCA supports skilled labor and fosters mutual growth, stability, and shared success within the construction industry in Wisconsin.


As a result of WUCA's collective bargaining agreements, contractors are obligated to contribute to the Issues Improvement Program or the Contractor Administration Fund an hourly rate as defined by the agreement. These contributions support industry-related initiatives, enhance labor-management relations, and fund the administration of the collective bargaining agreements, ensuring their effective implementation and ongoing development. For more information contact us at wuca@wuca.org.


Payment Instructions (Please refer to full agreements above for details):

Who Pays: All employers covered by either agreement   

  • WUCA Members pay IIP Only, Non Members Pay both IIP and CAF. Please feel free to use the table on the back side of this flier for your calculations.


Due: Payments are due monthly, by the 15th of the month following the payment period.       

  • Industry Improvement Program (IIP) - All   
  • $0.18 per hour an employee works (straight or overtime)   
  • Contract Administrative Fund (CAF) - Non-WUCA Members Only   
  • $0.30 per hour an employee works (straight or overtime) 


Late Fees:

  • Laborers 113- After employer is made aware of delinquent payments in writing, damages may be calculated as follows: An additional 20% of delinquent payment shall be applied, as well as monthly interest accrual on unpaid and delinquent balances. If delinquency is deferred to legal counsel for collection, attorney’s fees and other costs and expenses reasonably arising in connection to the collection may be added. 
  • Operators 139-Employer will be assessed, and agree to pay, $2.00 per employee for each thirty day period of delinquency. Employers may also be charged damages and costs for the purpose of enforcing rules, including audit, appropriate legal, equitable and administrative relieve without the need for grievance or arbitration.


Payments should be made payable to Industry Improvement Program or IIP & Contract Administrative Fund or CAF

(Payments may be combined, but please make check out to IIP and include documentation explaining the correct split)

Send to:

PO Box 1425

Waukesha, WI 53188

Payment Calculation Worksheet
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