Blog · September 9, 2026 · 8 min read
Claims terms municipalities actually hear: a plain-language glossary
FNOL, TPA, RTW, FROI, and the rest, defined in plain English for city and county risk, HR, supervisors, and claims staff.
By ZenClaims Editorial
Council members ask plain questions. Claims desks answer with acronyms. When a mayor asks whether people are getting care, "we're waiting on compensability from the TPA after a late FNOL" does not land. This glossary translates the terms municipal risk managers, supervisors, HR, and claims staff hear every week into plain language, with a city or county example for each.
Use it when you brief elected leaders, train new supervisors, or walk a department head through a file. These are employer-side words. Your pool or carrier may use the same labels with slightly different forms. The point is shared vocabulary inside the municipality.
Reporting
FNOL (first notice of loss): The first formal report that an injury or loss happened and needs a claim file. Example: A parks foreman submits FNOL the same afternoon a crew member strains a shoulder lifting a mower, so HR and claims can act before the next shift.
FROI (first report of injury): The official first-report form many states and carriers require, often tied to workers' comp filing rules and deadlines. Example: The county claims clerk completes the FROI from the supervisor intake so the report meets the state filing window.
Supervisor report: The line leader's internal account of what happened, who was involved, and what they saw or were told. Example: The wastewater plant supervisor writes a short report the same day, with time, location, and two witness names, then submits it through the city intake path.
DOL (date of loss): The date the injury or incident occurred (or was first known, depending on your state's rules). Example: The DOL on the file is Tuesday, when the clerk felt the back strain lifting boxes, even though she finished the shift and reported Wednesday morning.
Lag time: The delay between the date of loss and when the employer or carrier first records the claim. Example: A three-day lag time on a public-works sprain means medical authorization and wage questions start late, and council later asks why the file opened so slowly.
Incident vs claim number: An incident is the workplace event; a claim number is the identifier the carrier, pool, or TPA assigns once the file is in their system. Example: The city logs the incident Monday morning; the pool claim number arrives Tuesday after FNOL clears intake.
Internal claims workspace vs carrier portal: Your internal claims workspace is where employer users track intake and follow-through; a carrier portal is the outside system where the pool or insurer shows benefit status. Example: Risk staff use the city's claims workspace for follow-through, and check the carrier portal separately for indemnity payments.
Benefits and care
WC (workers' compensation): The statutory benefit system that covers work-related medical care and, when applicable, wage replacement for employees hurt on the job. Example: A court clerk's lifting injury runs through the county's WC program, not the regular health plan, once the claim is accepted.
Compensability: Whether the injury is accepted as work-related and covered under workers' comp. Example: Claims staff wait on compensability before promising wage replacement, while still coordinating medical evaluation the city already authorized.
Medical-only claim: A workers' comp claim that pays medical treatment but does not pay indemnity (lost-wage) benefits. Example: A small cut treated at urgent care and cleared for full duty the next day often stays medical-only if the employee never misses time.
Indemnity: Wage-replacement benefits paid when the employee is off work or on reduced earnings because of a covered injury. Example: After surgery, the equipment operator receives indemnity while out, then the payment changes when modified duty starts.
TPA (third-party administrator): An outside firm that administers claims for the employer, pool, or carrier (benefits, medical bills, case notes). Example: The city's TPA adjusts benefits while the risk office still owns internal intake, supervisor follow-up, and council briefings.
Pool / risk pool: A joint arrangement where public entities share risk and often buy claims administration together, common for cities, counties, and districts. Example: The town is a member of a municipal risk pool that handles WC benefits; the town still reports injuries and tracks return-to-work locally.
Employer of record: The entity that employs the worker for payroll, HR, and workers' comp purposes. Example: A seasonal parks hire is on the city's payroll as employer of record, so the city's WC program covers an injury on a weekend event shift.
IME (independent medical examination): An exam by a doctor chosen under claim rules (often carrier- or board-directed) to assess injury, treatment, or work capacity. Example: After conflicting clinic notes, the TPA schedules an IME; HR tells the employee what to expect and who to call with schedule questions.
MMI (maximum medical improvement): The point where the treating doctor finds the condition has stabilized and further recovery is not expected with ongoing treatment. Example: At MMI, the claims file shifts from active recovery planning to rating any permanent impairment and closing out temporary disability.
Permanent partial (permanent partial disability): Benefits tied to lasting impairment after MMI when the employee can still work in some capacity. Example: A firefighter with a rated permanent partial impairment returns to a role within restrictions while the indemnity side of the award is settled under state rules.
OSHA recordable vs WC claim: An OSHA recordable is a workplace injury that must be logged on the OSHA log when criteria are met; a WC claim is the benefit claim under workers' comp. They often overlap but are not the same decision. Example: A first-aid-only scrape may stay off the OSHA log and never become a WC claim, while a strained back with days away can be both.
Reserve: The money the claims administrator sets aside as the estimated future cost of a claim. Example: After surgery is approved, the TPA raises the reserve; the risk manager tracks that change when preparing the next loss summary for finance.
Return to work
RTW (return to work): The process of bringing an injured employee back to productive work, full duty or temporary alternatives, as medically appropriate. Example: The county RTW plan names the supervisor contact, the temporary tasks, and a two-week review date so the employee is not left waiting for a vague call.
Modified duty: Temporary work that fits medical restrictions while the employee recovers. Example: A sanitation driver with a lifting limit spends two weeks on route planning and training new hires inside the same department.
Light duty: Informal shorthand supervisors use for easier physical work; in practice it should match written restrictions, not guesswork. Example: "Light duty" on a sticky note fails when the only open task is warehouse lifting; a written modified-duty assignment with pound limits succeeds.
Oversight
OSIP / self-insurance oversight (where it applies): In some states (notably California's Office of Self-Insurance Plans), public self-insurers and joint powers authorities file required reports and meet regulatory rules for self-insured WC. Example: A California city that self-insures WC through a JPA still completes annual OSIP reporting while using employer-side tools for day-to-day claim follow-through.
Audit trail: The timestamped record of who reported what, when action was taken, and who owns the next step. Example: Before a safety committee meeting, the risk manager pulls the audit trail instead of rebuilding the timeline from forwarded email.
How to use this at work
Print the terms your supervisors actually hear. Put FNOL, lag time, claim number, and modified duty in new-hire supervisor training. When council asks whether the city is taking care of people, answer with dates and next steps, then translate the one or two technical words you still need.
Your pool, TPA, or carrier still runs benefits. ZenClaims is the shared place for risk, HR, and supervisors to report and track the work the city owns.