Employee misclassification in construction: How to prevent and correct it

Misclassifying a worker, even for a short period, might not seem like a high-stakes mistake. But a worker paid as a 1099 carries no withheld employment taxes or workers’ comp premium. That means if the IRS, the Department of Labor (DOL), or a state labor agency reclassifies that worker, all of it comes due at once. The FLSA standards cover the previous two years for accidental misclassifications and three for willful violations. So, even jobs already closed and billed within this timeline are subject to review. Tax exposure runs on a separate clock. 

Employee misclassification refers to two possible issues. The first is worker status, which refers to the distinction between a W-2 employee or 1099 independent contractor. The second is trade classification on prevailing wage and union jobs, where certain workers must receive a certain pay rate, depending on the situation.

Both create back pay exposure and have different prevention measures and resolutions for the wages already on the books. This guide covers each scenario, along with the tests that determine which classification applies.

What is employee misclassification in construction, and what causes it?

Employee misclassification happens when a company fails to follow legal specifications for classifying and compensating workers. This typically involves misidentifying or misdocumenting the type of work someone performs, how much pay they’re legally entitled to, and where the work occurs.

Worker status misclassification occurs when an employee is treated as an independent contractor, or vice versa. Trade classification refers to which trade or task the worker performed on the job. Both of these common issues impact the compensation and benefits they receive.

Employee classification is difficult on mixed crews, where W-2 employees and 1099 workers take direction from the same foreman. Crews change from job to job, and some people stay on the payroll for only a few weeks. Rushing their short onboarding process means HR teams are more likely to accidentally misclassify these workers. 

Trade classification drives pay on any job with a rate schedule attached, which includes public works and union labor. On federal and federally assisted contracts over $2,000, the Davis-Bacon Act (DBA) requires the prevailing wage and fringe rate listed for each classification in the job’s wage determination, and state prevailing wage laws do the same on state and local work. On union jobs the collective bargaining agreement sets the rates, whether or not a public owner is involved. If a single worker handles more than one task in a week, they’ll make different rates for every hour associated with each trade.

Accurately tying hours worked to the right trade classification means employers are more likely to pay workers the correct rates. But when crews select their own trade at clock-in, they risk choosing the wrong option. Payroll teams and systems need to verify these hours are coded properly.

How employers determine employee vs. independent contractor status

To classify a worker as W-2 or 1099, construction firms typically run one or more of the following tests, with state law layering on top. 

The IRS common-law test

The IRS applies the common-law test for federal employment tax purposes. This defines whether a company withholds income tax, pays its share of Social Security and Medicare taxes under the Federal Insurance Contributions Act (FICA) and federal unemployment tax (FUTA), and issues a W-2 or a 1099-NEC at year end. 

Three categories of evidence carry the determination: 

• Behavioral control: Does the company control exactly where, when, and how the worker does the job? Greater control typically points to W-2 classification.
• Financial control: Does the employer provide tools or other expenses, or is it up to the worker? Independent 1099 contractors typically cover their own expenses. 
• Type of relationship: Are there written contracts, benefits, or a level of permanence to the arrangement? Is the work a core part of the business? The more permanent a worker is, the more likely they are to be classified as an employee. 

Where a relationship is genuinely unclear, either party can request a formal determination on Form SS-8, though a response can take six months or more. 

The DOL economic reality test

The DOL applies the economic reality test under the Fair Labor Standards Act (FLSA), which governs minimum wage and overtime rather than taxes. It surfaces when the Wage and Hour Division investigates, or when a worker brings a claim for unpaid overtime. The latter scenario is more common in construction, where crews often work past 40 hours in a single workweek. 

The question is whether a worker is economically dependent on the company or genuinely in business for themselves. No single factor settles it. The test weighs: 

• Opportunity for profit or loss
• Relative investment
• Permanence of the relationship
• Degree of control
• Whether the work is integral to the business
• The worker’s skill and initiative

Note that as of writing, this six-factor list is the current regulation. Joe Biden’s administration established it in 2024. However, in February 2026, the DOL proposed reverting this rule and only taking the first five factors into consideration. A final ruling on the matter hasn’t been issued yet. Contractors looking to stay compliant should consider all six determinants while classifying employees and keep an eye out for future regulation changes. 

State-specific tests

Several states set a higher bar than the federal tests, including: 

• California: The ABC test presumes employee status unless a company proves all three conditions, one being that the work falls outside its usual course of business.
• New York: The Construction Industry Fair Play Act is construction-only and presumes anyone performing construction services is an employee.
• Minnesota: Statute § 181.723 sets the strictest standard. From March 2025, a worker must meet all 14 factors to qualify as an independent contractor, and a worker who fails even one factor becomes the employee of whoever engaged them for the work. 

The IRS and state agencies both expect contractors to keep the reasoning behind each classification on file. Minnesota requires those records for three years, produced on demand.

How trade classification works on prevailing wage and union jobs

Trade classification is a separate question from W-2 versus 1099. What’s at stake is which labor type they were paid under. 

On prevailing wage jobs, the wage determination lists every trade working in that county with its own base and fringe rate. On union jobs, the collective bargaining agreement does the same. For example, a worker who runs conduit one day and hauls material the next earns two different rates across a single week.

That makes the timesheet an important control point. An employee must receive classification before hours are approved, and a worker selecting one at clock-in is choosing a base rate, a fringe rate, and a comp code. Unclassified or misassigned hours won’t appear correctly on the certified payroll report, and a reimbursement issued later doesn’t fix the filing. The report has to be amended.

Legal and financial penalties for misclassifying employees

A single reclassification rarely produces one bill. These are the employee misclassification penalties that tend to arrive together. 

Back wages and benefit restitution

Reclassification makes a company retroactively responsible for what the worker was owed as an employee, including unpaid overtime, minimum wage shortfalls, and any employee benefits they were excluded from. The FLSA reaches back two years, or three for willful violations, and a worker who sues can recover back pay plus an equal amount in liquidated damages, effectively doubling the award. 

Tax penalties and unpaid liabilities

Employment taxes that were never withheld could become due in full. These include the employee’s share of income tax and FICA, the employer’s matching FICA share, and federal and state unemployment tax, plus interest and penalties.

The IRS reduces those rates where the misclassification was unintentional and the required 1099s were filed. Without the filings, the rates double, and intentional misclassification removes the reduction entirely. State unemployment agencies assess back contributions separately. 

Lawsuits and legal exposure

Misclassified workers can bring claims well beyond unpaid wages. Among them are denied overtime, unpaid sick leave, and discrimination or retaliation protections that apply only to employees. If the worker prevails, attorney’s fees and court costs fall to the employer on top of the award. 

Workers’ comp exposure and audit risk

A misclassification finding typically opens a retroactive workers’ comp premium audit. Payments to any sub who couldn’t produce a current certificate of insurance get added to the company’s own payroll base at the company’s class code, and the examination usually widens across open and closed jobs. 

On prevailing wage work, a misclassified worker also makes the certified payroll statement inaccurate. This can escalate the exposure to false certification, withheld contract payments, and possible debarment from future public bidding.

Preventing and correcting employee misclassification in construction

Prevention means deciding classification deliberately and recording the decision. This process can include: 

• Written classification policies: A documented standard tied to the tests above keeps decisions consistent across hiring managers and gives the company the reasoning file agencies expect. 
• Timely 1099 filings: Timely returns preserve the reduced IRS rates if a classification is later overturned. 
• Scheduled reviews of every 1099 relationship: Quarterly reviews are effective for most contractors, with each review recording the worker, the test applied, and the conclusion reached.
• Sub and labor broker vetting at onboarding: Both the certificate of insurance and the sub’s own classification need confirming during the onboarding process.
• Early trade classifications: Classification at the timesheet leads to more accurate time tracking and job costing, leading to correct payroll the first time. 

Correction steps

Deciding how to correct employee misclassification depends on which error occurred. Trade classification errors typically call for an off-cycle correction payroll that reverses the original hours and reruns them at the right classification. An amended certified payroll report then goes out for each week. 

Worker status errors take a different route. Reclassified periods need original W-2s, leaders must correct or void the 1099-NECs already filed, and the affected quarters get amended on Form 941-X.

Either way, self-reporting costs less. The IRS Voluntary Classification Settlement Program caps what’s owed. Employers must reclassify going forward on Form 8952 and pay a reduced amount on past periods. Eligibility ends once the IRS, DOL, or a state agency opens a classification examination.

Keep employee classification accurate with Miter

Worker and independent contractor misclassification often happen at hire. Documenting that reasoning and assigning classification before payroll processes limits the retroactive exposure.

Miter addresses the trade classification side directly. Pay rate groups define each classification with its wage rate, fringe rate, and workers’ comp code. Miter resolves the right one from the job or timesheet, so hours cost accurately at approval. When a classification is corrected, Miter regenerates the certified payroll report from the correction payroll, so the amended week reflects the right classification and rate.