Superintendent Class Code 5606 Is an Audit Trap
Florida's 2025 report puts Code 5606 in the top 10 by policy count. The title sounds simple; the supervision test is where audit bills start.
Superintendent class code 5606 is for construction managers, project managers, and superintendents who supervise indirectly, not workers with direct charge of field crews. Florida lists Code 5606 among its 10 largest class codes by policy count and shows a 0.51 pure loss cost (FLOIR, January 2026). The audit trap is the missing supervision layer.
Superintendent class code 5606 looks harmless until the premium audit asks who your superintendent actually supervised.
Florida just put a spotlight on the code. Its 2025 Workers' Compensation Annual Report lists Code 5606 among the 10 largest Florida class codes by policy count, using policy years 2022 and 2023 and approved filings available as of November 11, 2025, including Florida's January 1, 2026 filing (FLOIR, January 2026). Florida's pure loss cost for the code is 0.51, above the NCCI average of 0.43, and Florida ranks 10th among 37 jurisdictions for that comparison (FLOIR, January 2026).
Why superintendent class code 5606 fails
The rule is not a job-title rule. That is the first mistake.
Tennessee's current contracting class-code list, provided by the National Council on Compensation Insurance (NCCI), says eligibility turns on duties, not titles, and defines the eligible person as one exercising operational control indirectly through full-time job supervisors or forepersons (Tennessee DOL, accessed July 2026). A 2015 Tennessee Department of Commerce and Insurance order quoting the NCCI Scopes Manual says the key is "job duties and not their title" (Tennessee DOI, February 2015).
The practical test is two levels of supervision. The 5606 employee sits above the foreman or job superintendent. The foreman or job superintendent is in direct charge of the workers. If the person in 5606 is assigning tasks or filling the foreman role because the site is thin that day, the code starts to wobble.
The $150,000 superintendent payroll swing
Say a Southeast contractor carries $150,000 of superintendent payroll in Code 5606. If an auditor moves that payroll into the governing trade class, the premium change is not abstract. At a $5 per $100 rate spread, the added annual premium is $7,500 before the Experience Modification Rate (EMR, also called the mod). At a $10 per $100 spread, it is $15,000 before the mod (Orson premium model, July 2026).
Now add the mod. A 1.20 EMR turns that $15,000 class-code swing into $18,000. A 0.85 EMR turns it into $12,750.
This is why the class code argument cannot be separated from the worksheet. NCCI says experience rating usually compares the latest available three years of payroll and loss data for the employer against similar employers in the same classification (NCCI ABCs, 2025). If payroll is reported under the wrong code, the premium is wrong now, and the expected-loss side of the mod can be wrong later.
State variation is part of the trap
Contractors like clean national answers. Workers' comp doesn't always give them one.
North Carolina's Basic Manual says Code 5606 must be separately classified even when a construction classification uses broad wording such as all employees or all operations (NCRB, accessed July 2026). The same North Carolina rule says classification corrections that decrease premium apply retroactively to the policy effective date, while some increases depend on when the carrier discovers the correction (NCRB, accessed July 2026).
Tennessee's class-code list is more explicit about the field chain. If control runs through a subcontractor, the subcontractor must have a job supervisor or foreperson at the specific job site for the classification to apply (Tennessee DOL, accessed July 2026). It also says Code 5606 is not available for division of a single employee's payroll with another classification (Tennessee DOL, accessed July 2026). That is a hard edge for contractors who treat a superintendent as half-office, half-foreman.
Massachusetts shows why state wording cannot be assumed, even when NCCI drafted the national scope. Its bureau said the Code 5606 change approved in most NCCI-administered states effective November 1, 2005, was adopted in Massachusetts for policies effective April 1, 2021, after the state had maintained stricter criteria (WCRIBMA, January 2021).
The mod worksheet remembers the cleanup
In our reviews of Southeast contractor worksheets, superintendent coding errors usually show up after a premium audit has already moved payroll. The issue is whether the corrected class data reaches the unit statistical report and then the mod calculation.
NCCI says it identifies and collects employer payroll and loss information, develops the rating, and distributes the mod to the insurer (NCCI ER Production Service, accessed July 2026). That is mechanical only if the payroll classifications sent into the machine match the work.
A superintendent misclassified into 5606 can understate manual premium and create an audit bill. A superintendent misclassified out of 5606 can overstate premium and distort expected losses. Both versions leave the CFO with the same question: is the worksheet pricing the work that actually happened?
What an audit would check
An audit checks whether the superintendent's class code is supported by the actual reporting chain, the state rule that applies to the policy, and the payroll data that reached the rating bureau. It also checks whether pre-audit documentation tells the same story before the carrier's auditor moves payroll after the year closes. The review stays focused on the pricing record, not on teaching the company how to reclassify its own supervisors.
A superintendent title is not a class code. Send us your NCCI worksheet and premium audit statement, and we'll review whether the 5606 payroll still holds.