Prevailing Wage: How Public Project Rules Shape Competition in Washington

​Prevailing Wage: How Public Project Rules Shape Competition in Washington

Prevailing wage is a rule that establishes a required minimum pay rate for specific construction jobs on many public works projects. In Washington, this often means contractors bidding on taxpayer-funded work must pay wages and benefits at or above a set rate for each trade in a given area. The goal is to prevent “low bid” competition that relies on lowering wages, but the way the policy functions can also influence which contractors are most capable of competing, and that is where organized labor becomes part of the discussion.
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Many union contractors already pay wage and benefit packages that align closely with prevailing wage rates. Because of that, they may encounter fewer adjustments when bidding on public projects, and they often already have payroll systems in place to handle detailed classifications and reporting. In contrast, some non-union or open-shop contractors may pay market wages that are lower than the prevailing wage rate, or they may structure benefits differently. When these firms bid on public work, they might need to raise wages, add benefit costs, and increase administrative tracking, which can lead to higher bids or make management more difficult.


This is why critics argue that prevailing wage can act like a built-in advantage for unionized firms, even if the law doesn't mandate a contractor to be union. The requirement can reduce the difference between union and non-union labor costs and can boost the value of having a trained workforce and a compliance-ready back office. Essentially, prevailing wage can tip the playing field toward contractors whose business models already align with those wage structures and reporting practices, which are often union contractors.


Supporters say this isn't about “cornering jobs” but about setting quality and fairness standards for publicly funded work. They claim that higher wage floors attract skilled workers, decrease turnover, enhance safety, and ensure projects finish on schedule. They also note that public agencies and taxpayers benefit when contractors are less likely to underbid, then struggle to staff the project, cut corners, or use change orders to regain profitability.


For businesses and residents of Washington, the practical tradeoff is between competition and cost. If setting a prevailing wage reduces the number of bidders or discourages smaller contractors from submitting bids, project prices may increase and deadlines could be extended. This can result in fewer projects being completed with the same amount of tax dollars. At the same time, higher wages can lead to more local spending, more stable careers in the trades, and less reliance on public assistance programs, which can benefit community well-being in the long run.


Ultimately, prevailing wage is a policy that does more than just determine pay. It affects who competes for public projects, how many firms bid, and how construction markets evolve in a region. Organized labor often benefits because union contractors are already prepared to meet these standards, while some non-union firms face higher costs and more paperwork to participate. The most important debate centers on design and transparency: whether wage rates truly reflect local conditions, whether compliance rules are clear and manageable for small contractors, and whether Washington is getting the right balance of fair pay, strong competition, and good value for taxpayers.

Research and commentary on impacts, costs, and competition

• Duncan, K. (2019). What Does the Research Tell Us About the Impact of Prevailing Wage Laws? (journal article).
  
• Onsarigo, L. et al. The effect of prevailing wages on building costs, bid competition, and project outcomes (paper).
  
• Economic Policy Institute. Prevailing wages and government contracting costs (policy review).
  
• Mackinac Center for Public Policy. What Do We Know About the Impact of Prevailing Wage Laws (policy commentary).
  
• Duncan, K. (2021). What the Research Tells Us About the Costs and Benefits of Prevailing Wage (report).
  
• Associated Builders and Contractors. Studies on the Negative Impact of the Davis-Bacon Act and Prevailing Wage Laws (compiled viewpoint sources, including union and competition arguments).
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  This article was written with contributions from AI to organize the information and improve its readability.