Adjuster Math

An injured worker negotiating without understanding the claims administrator's incentives is negotiating blind.

The adjuster on your file is not weighing what is fair. That is not the job. The adjuster is managing a reserve, spending authority, and a file-closure metric — and every one of those is a number set by rules you can learn.

This page explains how the offer on your table was actually produced.

The reserve is the number that governs everything

A reserve is what the carrier books today as the estimated ultimate cost of your claim. It is set in three buckets:

Indemnity reserve. Temporary disability, permanent disability, death benefits. The arithmetic is mechanical: derive average weekly wage from payroll, apply two-thirds to get the comp rate, multiply by the anticipated number of weeks. Twelve anticipated weeks of temporary disability at a $500 rate books $6,000.

Medical reserve. Every anticipated service — physician, hospital, surgery, physical therapy, diagnostics, pharmacy. Industry guidance holds that a skilled adjuster lands within 10–15% of the final medical cost.

Expense reserve (ALAE). Defense counsel, QME and AME costs, medical records, surveillance, interpreters, court costs.

That third bucket is why small cases settle. It is a real, budgeted number that exists whether or not the carrier wins.

Why the offer feels arbitrary

Because it is anchored to a reserve set long ago, on incomplete information, by someone who had not seen most of your medical record.

An adjuster generally cannot exceed the reserve without a reserve increase — and reserve increases are visible, documented, and sometimes career-relevant. An adjuster who under-reserved your file at sixty days may resist a well-supported demand not because it is unreasonable, but because agreeing to it means acknowledging a two-year-old reserving error to a supervisor.

There is also a structural pull toward under-reserving. Reserves feed the employer's experience modification, which feeds renewal premium. Industry commentators have warned openly that this creates "a financial incentive for employers and brokers to encourage claims examiners to under-reserve." If your case meets resistance that seems disconnected from the merits, an under-reserved file is a likely explanation.

The tell to watch for. Industry guidance describes adjusters who make "a high number of reserve changes with small dollars" as engaging in "stair step reserving... churning their claims and not accurately identifying the exposures." An adjuster moving $5,000 at a time is working under a low reserve. The response is escalation — through defense counsel, a supervisor, or a settlement conference where the adjuster is ordered to appear with authority.

Reserve authority is not settlement authority

These are separate permissions, and the distinction explains a great deal of otherwise baffling behavior.

The escalation ladder, which varies by carrier:

• Line adjuster — a modest threshold; can close small files alone
• Team lead or supervisor — mid-range
• Claims manager — higher
• Home office, committee, or roundtable — large exposures, catastrophic files, anything touching 100% permanent disability or a life pension
• Excess carrier or reinsurer — where the settlement pierces the self-insured retention; their consent may be required
• The employer itself — on self-insured, large-deductible, or retro-rated programs, the employer may hold or share authority

That last one is why some cases stall for reasons nobody will explain. The person you are negotiating with may not be the person deciding.

The practical consequence: a demand above authority produces a delay, not a rejection. When the adjuster goes quiet after a significant demand, the file is usually being escalated. Patience is frequently better tactics than a concession.

The six things that actually move the number

1. Future medical, built from what they already paid

The largest and most contested term in any Compromise and Release. The carrier's internal figure is built from historical utilization — actual paid medical over the last twelve to twenty-four months, annualized and projected forward.

Which means a quiet treatment year before settlement is worth less money. A worker treating consistently has a defensible burn rate. A worker who stopped going — because of the pain, the commute, the copays, the hassle of authorizations — has handed the carrier its strongest argument that future care is worth very little.

This is the single most actionable fact on this page, and it operates in the year before anyone starts talking about settlement.

2. What it costs them to win

This is the engine of nuisance value, and it is worth stating plainly.

Taking a case to trial costs the carrier defense fees, a defense evaluation, surveillance, deposition transcripts, medical records, an interpreter, sometimes a vocational expert — plus settlement conference and trial time. On a modest file, the cost of winning can exceed the cost of settling.

A carrier that genuinely believes it will win a $15,000 case will still often pay $8,000–$12,000 rather than spend $20,000 proving it.

Which is why trial readiness converts directly into money. Completed discovery, a filed Declaration of Readiness, a set trial date, and a firm that actually tries cases all change this arithmetic. A carrier that thinks you will fold prices the file accordingly.

3. The risk of a bad medical evaluation

Before the panel QME reports, your case is not a number to the carrier. It is a distribution.

An evaluator known for higher impairment ratings, generous causation findings, or minimal apportionment can turn a 5% case into a 35% case. The carrier reserves against a probability-weighted range that includes that outcome.

This is why the window before the QME report issues is often the best settlement window on a genuinely uncertain case. Both sides are pricing the tail risk. Once the report lands, one side's tail risk collapses — and if it is yours, the leverage goes with it.

4. The Medicare Set-Aside

Where an MSA is required, its cost is a hard external number the carrier cannot argue down: the allocation report, the CMS submission, professional administration, and above all the funded amount — which must be paid in full and does not reach you as spendable cash.

An MSA can consume a large share of a settlement. When it appears, both sides' economics change. Carriers sometimes prefer Stipulations on a high-MSA file precisely to avoid funding the set-aside at all.

5. Serious and willful, and 132a

Both are asymmetric, and both frighten carriers out of proportion to their dollar caps.

LC § 4553 — where injury results from the employer's serious and willful misconduct, compensation "shall be increased one-half." A 50% increase across the entire award.

And here is what matters: serious and willful exposure is not insurable. The employer pays it directly, out of pocket, not through the policy. That transforms the negotiation, because now the employer has personal money at stake — and the employer has every reason to pressure the carrier to resolve the underlying case so the S&W petition goes away.

LC § 132a — discrimination for filing a claim. Up to a 50% increase capped at $10,000, plus costs, plus lost wages and benefits, plus reinstatement. The statute makes the conduct a misdemeanor. The deadline is one year from the discriminatory act.

The caps understate the pressure. A live 132a claim opens discovery into personnel practices, puts managers under oath, and can seed a parallel FEHA or wrongful-termination action outside the comp system entirely. Carriers pay to make all of that stop.

6. The meter that is still running

Every week you remain on temporary disability is a full weekly benefit, plus continued medical, plus an open file.

At the 2026 maximum, one week of temporary disability is $1,764.11. Twenty more weeks is $35,282 — frequently more than the entire gap between the parties' settlement positions.

An adjuster looking at a worker who is nowhere near permanent and stationary has a purely arithmetic reason to settle now. Say this out loud in negotiation. It is the argument an adjuster can most easily carry to a supervisor, because it does not require anyone to concede anything about the merits.

When the reserve gets reviewed — and why timing matters

Carriers review reserves on a schedule: at file inception and at the accept/deny decision; on a sixty-day diary; at 180 days from the date of injury; three weeks before unit statistical reporting; when temporary disability ends or the worker returns to work; at settlement; and annually on open future-medical files.

Two of those are actionable.

Unit stat reporting is the valuation the rating bureau uses to set the employer's experience modification. It creates real pressure to close or accurately reserve files just beforehand.

The annual future-medical review on an open-medical Stipulations file is when a carrier decides whether to pursue a buyout. If you have open future medical and you would consider a lump sum, that review is the moment the carrier is already thinking about it.

Timing a demand into a review window is a genuine tactic, not a superstition.

What this means for you

The first offer is a starting position anchored to an old reserve. It is not a valuation of your case.

Give the adjuster material to justify going up. A written demand that itemizes permanent disability weeks and dollars, temporary disability arrears with the rate calculation shown, an annualized future-medical projection tied to actual paid history, and specific penalty exposure is a document a supervisor can approve. A phone call asking for more money is not. The adjuster frequently needs ammunition more than persuasion.

Consistent treatment is leverage — and it is the evidence that supports future medical value.

Trial readiness is leverage. So is who represents you, and whether that firm has a record of trying cases rather than settling everything.

The pre-QME window is often the richest, because both sides are pricing uncertainty.

A file open a long time with a heavy expense burn is a file the carrier wants closed. That is worth something, and it is worth naming.

Frequently asked questions