If you received a permanent disability rating after a California work injury, you probably got a document with a string of numbers and letters that looks something like this:
15.07.02 — 1.4 — 15 — 580H — 15 — 15
Most injured workers stare at it and have no idea what they're looking at. The insurance carrier's adjuster understands it. The defense attorney understands it. If your attorney doesn't, or if you don't have one, you're negotiating blind.
This guide decodes every segment of that rating string, tells you exactly how California converts a medical finding into a dollar amount, and explains what a specialist looks for when a rating is being used to underpay you.
We've recovered over $150,000,000 for injured California workers — and disputing undercalculated PD ratings is one of the most consistent ways we've done it. Here's what you need to know.
Quick Answers (TL;DR)
- A PD rating is a percentage between 0% and 100% that measures how permanently your work injury limits your ability to compete in the open labor market.
- Every rating starts with WPI (whole person impairment), assigned by a doctor using the AMA Guides 5th Edition, then adjusted by the FEC modifier, occupational group, and your age at the time of injury.
- The 2026 weekly PD benefit range is roughly $160 to $290 per week, depending on your pre-injury earnings and PD percentage. Higher percentages earn higher weekly rates.
- Apportionment under Cal. Lab. Code §4663 can legally reduce your PD award if the insurer proves some of your disability pre-existed this injury.
- A 25% PD rating is currently worth approximately $45,500 total — but only if the underlying WPI, occupational group, and apportionment figures are correct.
- You can dispute a low rating — and the four most effective levers are the WPI itself, the apportionment percentage, the occupational group, and the applicable benefit rate year.
- 100% PD means lifetime weekly payments under Cal. Lab. Code §4659.
What Is a Permanent Disability Rating?
A permanent disability rating in California is a percentage between 0% and 100% that measures how much a work injury permanently limits your ability to compete in the open labor market.
A rating of 0% means your doctor found no permanent impairment from the work injury. A rating of 100% means you are permanently and totally disabled — you cannot compete in any form of sustained employment. Most injured workers fall somewhere between those poles.
The rating matters for one specific reason: it determines how many weeks of PD benefits you receive, and at what weekly dollar rate. A higher rating means more weeks of payments. It also affects whether your case can settle via Compromise & Release (C&R) or Stipulation with Request for Award ("Stip") — two forms of settlement at the WCAB (Workers' Compensation Appeals Board).
California established the PD rating system under Cal. Lab. Code §4660 and requires that the AMA Guides 5th Edition be used as the medical baseline. The math that follows — the FEC modifier, occupational adjustment, and age adjustment — is all specified in the state's Permanent Disability Rating Schedule (PDRS), which is maintained by the DWC (Division of Workers' Compensation).
One thing most injured workers don't realize: The rating the insurance company's doctor assigns is not automatically the rating you're stuck with. It is a starting position. Specialists dispute low ratings every day.
Anatomy of a PD Rating String
When you look at a rating string, each segment is doing a specific job. Here is what each piece of a typical string like "15.07.02 — 1.4 — 15 — 580H — 15 — 15" actually means:
Segment: 15.07.02 · What It Is: The impairment number from the AMA Guides 5th Edition (WPI %) · Example: 15% whole person impairment
Segment: 1.4 · What It Is: The FEC (Future Earning Capacity) modifier · Example: Standard post-SB 863 multiplier
Segment: 15 · What It Is: Adjusted impairment after FEC is applied · Example: 15% × 1.4 rounded to nearest whole
Segment: 580H · What It Is: Occupational group code + variant · Example: Medium-heavy work, variant H
Segment: 15 · What It Is: PD percentage after occupational adjustment · Example: May stay flat or shift
Segment: 15 · What It Is: PD percentage after age adjustment · Example: Final combined rating
The last number in the string is your final PD rating percentage. That percentage is plugged into the benefit rate table to determine how many weeks of PD you receive and at what weekly dollar amount.
If your string has more than one impairment (e.g., a back injury AND a knee injury from the same incident), the string will include multiple impairment lines that are combined using the DWC "combined values chart" — not simply added together. This is a key point: 10% + 10% does not equal 20% under the combined values chart. It typically equals around 19%.
The 5 Components of Every PD Rating
Component 1: WPI (Whole Person Impairment)
California workers' comp uses the AMA Guides 5th Edition to convert your medical findings into a whole person impairment percentage, which is the starting point for every PD rating.
WPI is assigned by your treating physician, a QME (qualified medical evaluator), or an AME (agreed medical evaluator) after your condition reaches MMI (maximum medical improvement) — meaning your doctor believes your injury has stabilized and further treatment won't materially improve your condition.
The doctor examines your range of motion, nerve function, imaging, and other clinical findings. They then reference specific tables in the AMA Guides 5th Edition to translate those clinical findings into a percentage of whole-person impairment.
Important: This is where errors most frequently enter the rating system. Doctors who perform these evaluations vary in their thoroughness. A doctor who does not fully examine your limitations, who uses the wrong table, or who applies incorrect methodology can produce a WPI that is too low — and a low WPI cascades into a low dollar payout.
Component 2: The FEC Modifier
The 1.4 FEC modifier — which stands for Future Earning Capacity — is applied to most ratings after Senate Bill 863 went into effect in 2013, replacing the old occupational adjustment system.
For injuries on or after January 1, 2013, a flat 1.4 multiplier is applied to the WPI before the occupational group adjustment. (For injuries before 2013, different FEC adjustments applied — if your injury date was before SB 863, the calculation may differ significantly. Call us to walk through your specific facts.)
The 1.4 FEC modifier was established by the California DWC as a trade-off: injured workers received a flat benefit increase through the multiplier in exchange for the elimination of the more complex occupation-based FEC adjustment that existed before.
Practical effect: A 10% WPI becomes a 14% adjusted impairment before the next steps are applied. The multiplier is fixed — it does not change based on your job or industry for most SB 863-era injuries.
Component 3: Occupational Group Adjustment
After the FEC modifier is applied, the result is adjusted based on your occupation. The DWC assigns each occupation to one of several occupational groups (coded in the PDRS as numbers like 110, 212, 360, 470, 580, etc.) that reflect the physical demands of the work.
The occupational group is then cross-referenced against the adjusted impairment percentage in an occupational variant table. The result can increase or decrease the rating.
Why this matters: A desk worker and a roofer with the same 15% WPI back injury will end up with different PD ratings — because the roofer's occupation is more physically demanding, so the same spinal impairment takes a greater percentage of their work capacity away. This is where cases involving heavy-labor industries like construction, warehousing, and manufacturing often have more room to argue for a higher rating.
Component 4: Age Adjustment
California's PDRS also adjusts the PD rating based on your age at the time of injury, using an age-adjustment table. Older workers receive a slight upward adjustment because a permanent physical limitation is proportionally more severe for someone with fewer working years ahead of them during which to adapt.
The age adjustment is typically minor — often just 1-2 percentage points — but in borderline cases (e.g., a rating that might cross from 24% to 25% or from 69% to 70%), it can trigger a significantly higher weekly benefit rate.
Component 5: Final Combined Rating
If you have more than one body part injured, the individual ratings are combined using the DWC combined values chart rather than added. This chart follows a mathematical formula that prevents the total from exceeding 100% while giving credit for multiple impairments.
The formula for combining two values A and B is: A + B × (1 - A). For example, 20% and 15% combined = 20% + (15% × 80%) = 20% + 12% = 32%. This is materially different from 35% (the simple sum), and the difference can mean thousands of dollars.
AMA Guides 5th Edition: What Your Doctor Is Using
The AMA Guides to the Evaluation of Permanent Impairment, Fifth Edition, is a medical reference book — not a legal document. But California Labor Code §4660(b) makes it the legal standard for WPI evaluation in workers' comp claims.
The Guides have chapters for every major body system: musculoskeletal (spine, upper extremities, lower extremities), neurological, pulmonary, cardiovascular, and more. Each chapter contains tables that convert clinical findings into WPI percentages.
Examples of how WPI is assigned:
- Lumbar spine: Range of motion deficits, diagnosis-based estimates (DRE categories I-V), and sensory/motor deficits from nerve root involvement each contribute to a WPI percentage. A DRE Category III lumbar spine impairment (e.g., significant disc herniation with radiculopathy) typically generates a 10-13% WPI before any modifiers.
- Knee: Loss of range of motion, ligament laxity, and meniscal findings are each valued. A post-surgical knee with limited flexion might generate 8-15% WPI depending on findings.
- Carpal tunnel syndrome: Sensory and motor testing determine the grade of impairment (0-5), each mapped to a WPI range.
The Guides leave room for clinical judgment — which is exactly where disputes arise. A conservative evaluator applying the Guides narrowly assigns 8%. A thorough evaluator examining the same patient finds 13%. Your attorney's job is to make sure the correct value is applied — and if it isn't, to secure a second opinion through the QME or AME process.
How Occupation and Age Adjust Your Number
To see how the math actually works, here's a simplified example:
Scenario: 45-year-old warehouse worker, lower back injury, injury date after January 1, 2013.
- WPI assigned by QME: 15%
- FEC modifier (×1.4): 15 × 1.4 = 21 (rounded to 21%)
- Occupational group: Warehouse/manual labor = Group 480 (heavy manual work). Under the occupational variant table, a 21% adjusted impairment in a heavy-work occupation maps to approximately 21-24% PD. Let's say 22%.
- Age adjustment: Age 45 adds approximately 1 point → 23%.
- Final PD rating: 23%
That 23% is then used to calculate weeks and weekly benefit payments.
Now compare if the same doctor assigned 12% WPI instead (a common undervaluation):
- WPI: 12%
- FEC modifier: 12 × 1.4 = 16.8 → 17%
- Occupational group (same): ~17-18% PD
- Age adjustment: +1 → 18%
- Final PD rating: 18%
A 3% WPI undervaluation turned into a 5-point PD rating difference — and, as you'll see in the rate table below, a 5-point difference at the 18-23% range is worth thousands of dollars in total PD benefits.
This is not a hypothetical edge case. This gap between thorough and cursory evaluations happens in a large share of PD cases.
2026 PD Benefit Rate Table: What Your Percentage Pays
California's PD weekly benefit rates are set by Cal. Lab. Code §4658 and updated periodically. The rate depends on your PD percentage — higher percentages receive higher weekly payments. The payment rate is also affected by the date of injury (different rate schedules apply to injuries in different years).
For injuries occurring in recent years, the weekly PD benefit ranges from approximately $160 to $290 per week, depending on your permanent disability percentage and pre-injury average weekly earnings.
Here is a simplified reference table for 2025-2026 injuries. Note: exact rates are tied to your date of injury and the DWC benefit rate schedule in effect for that year. The numbers below are approximate. Call (818) 794-9947 for a free calculation based on your specific date of injury and PD rating.
PD % Range: 1%–9% · Approx. Weekly Rate (2025-26): ~$160–$200/week · Total Weeks: 3–36 weeks · Approx. Total PD Award: ~$480–$7,200
PD % Range: 10%–19% · Approx. Weekly Rate (2025-26): ~$200–$240/week · Total Weeks: 40–70 weeks · Approx. Total PD Award: ~$8,000–$16,800
PD % Range: 20%–29% · Approx. Weekly Rate (2025-26): ~$240–$265/week · Total Weeks: 100–160 weeks · Approx. Total PD Award: ~$24,000–$42,400
PD % Range: 30%–39% · Approx. Weekly Rate (2025-26): ~$250–$270/week · Total Weeks: 200–250 weeks · Approx. Total PD Award: ~$50,000–$67,500
PD % Range: 40%–49% · Approx. Weekly Rate (2025-26): ~$265–$280/week · Total Weeks: 275–333 weeks · Approx. Total PD Award: ~$72,875–$93,240
PD % Range: 50%–69% · Approx. Weekly Rate (2025-26): ~$270–$290/week · Total Weeks: 425–658 weeks · Approx. Total PD Award: ~$114,750–$190,820
PD % Range: 70%–99% · Approx. Weekly Rate (2025-26): ~$290/week · Total Weeks: 694–1,001+ weeks · Approx. Total PD Award: ~$201,260–$290,290+
PD % Range: 100% · Approx. Weekly Rate (2025-26): Lifetime payments · Total Weeks: Lifetime · Approx. Total PD Award: Lifetime (see §4659)
Important note about the rate table:
The number of weeks is set by statute (Cal. Lab. Code §4658) and changes at specific PD thresholds. Crossing from 24% to 25% is one of several "step-up" points in the schedule — meaning a 1-point difference in PD rating can add a significant number of benefit weeks. This is why fighting for accurate ratings at borderline percentages matters so much.
A 25% permanent disability rating in California is currently worth approximately $45,500 in total PD benefits, paid out at a weekly rate that depends on your date of injury.
100% Permanent Disability: Lifetime Payments
If you reach 100% permanent disability, California Labor Code §4659 entitles you to permanent total disability payments at the temporary disability rate for the rest of your life.
A 100% PD rating is uncommon, but it does occur in catastrophic injury cases — severe traumatic brain injury, complete spinal cord injury, bilateral amputations, and similar injuries. It also arises when multiple impairments across body parts, combined through the DWC values chart, reach 100%.
Under Cal. Lab. Code §4659(b), the weekly payment for total permanent disability is tied to the state average weekly wage and increases with annual cost-of-living adjustments. For injuries occurring in recent years, this can exceed $1,500 per week for life — making the determination of total vs. partial permanent disability one of the highest-stakes calculations in California workers' comp.
If your combined rating is approaching 70% or higher, the question of whether it can be built to total disability through the correct medical and legal analysis is one a specialist should evaluate.
Apportionment Under Cal. Lab. Code §4663
Under California Labor Code §4663, an insurer can reduce your PD payment if it proves that part of your disability existed before this injury — this is called apportionment.
Apportionment is one of the most misunderstood — and most aggressively used — tools in the insurance carrier's playbook. Here is how it works:
Example: You hurt your lower back at work. Your doctor assigns a 20% WPI. But in their report, the doctor notes that imaging shows pre-existing degenerative disc disease "consistent with normal aging." The insurance carrier's attorney will argue that 50% of your disability is apportioned to that pre-existing condition — cutting your effective PD from 20% to 10%.
Cal. Lab. Code §4663 requires that apportionment be based on substantial medical evidence — a physician must specifically address causation and state what percentage of the disability is attributable to the work injury versus non-industrial factors. Vague references to "pre-existing conditions" or degenerative changes are not automatically sufficient under California case law.
What specialists look for when challenging apportionment:
- Did the doctor's report actually perform a causation analysis, or just mention the existence of a prior condition?
- Is the degenerative change a "normal aging" finding, or was it pathological and symptomatic before this injury?
- Was the pre-existing condition actually disabling the worker before this injury?
- Is there a prior award that already compensated for the prior condition?
Challenging an improper apportionment finding through the QME process or a formal hearing can restore the full PD rating. The burden is on the insurer to establish apportionment with medical evidence — not on you to disprove it.
Also note: Cal. Lab. Code §4664 limits total apportionment across multiple claims if you have previously received a PD award for the same body part. If prior awards already apportioned a percentage, the insurer cannot double-count that prior impairment. This is a complex calculation that frequently favors the worker when properly analyzed.
How a 99.9%-Win Specialist Disputes a Low PD Rating
Most injured workers accept the first PD rating they receive because they don't know it can be challenged. Insurance carriers count on that.
Here are the four levers we use to dispute low PD ratings — levers that most generalist firms either miss or don't pursue aggressively.
Disputing a low PD rating requires attacking four separate levers: the WPI assigned by the doctor, the apportionment percentage, the occupational group classification, and the date-of-injury benefit rate applied.
Lever 1: The WPI Itself
The WPI is only as good as the medical evaluation that produced it. If the evaluating doctor:
- Missed testing certain ranges of motion,
- Applied the wrong diagnostic category under the AMA Guides,
- Relied on imaging without full clinical examination,
- Did not address all injured body parts,
- Ignored subjective complaints that the Guides say should be factored in,
…then the WPI is subject to challenge. The path is through the QME process (Cal. Lab. Code §4062), where a new QME evaluation can produce a different — and correct — WPI.
We review the doctor's methodology in every PD dispute case. A few percentage points of WPI, compounded through the FEC modifier and occupational table, can add tens of thousands of dollars to a total award.
Lever 2: The Apportionment Percentage
As detailed in the section above, improper apportionment can cut a PD award by 30%, 40%, or more. Challenging the medical basis for apportionment — and forcing the insurer to prove causation with actual clinical analysis — is one of the most consistently valuable strategies in PD disputes.
Lever 3: The Occupational Group Classification
The occupational group code in your rating string is assigned based on how your job is classified under the DWC's occupational classification system. If your actual job duties are heavier than the classification used, your rating can be understated.
We have seen cases where an injured worker whose job involved regular manual labor was classified in an "office/sedentary" occupational group — either due to a job description that didn't match reality or an error in the DWC process. Correcting the occupational group can add 2-5 percentage points to the final PD rating.
Lever 4: The Date-of-Injury Benefit Rate
Different date-of-injury years have different PD benefit rate tables under Cal. Lab. Code §4658. For injuries spanning multiple years — which is common in cumulative trauma claims (e.g., repetitive motion injuries that developed over time) — the applicable date of injury affects which rate schedule applies.
Establishing the correct date of injury for a cumulative trauma claim, and ensuring the correct benefit rate table is applied, is a legal argument that a specialist makes through the WCAB process. Using the wrong rate schedule — even by one year — can affect the total PD award by several thousand dollars.
How PD Ratings Interact With Settlements
Your PD rating is the foundation of your workers' comp settlement, but it is not the whole story.
In a Stipulation with Request for Award ("Stip"): The WCAB enters a formal award based on the agreed PD rating. You receive weekly PD payments over the specified number of weeks. Future medical treatment for the injury remains open (the claim stays active for ongoing care). This is the most common resolution for PD claims where the worker still needs future medical care.
In a Compromise & Release (C&R): The entire claim — including future medical treatment — is settled for a lump sum. The lump sum is negotiated based on (among other factors) the PD rating, the expected cost of future medical care, and the strength of the case at trial. C&R settlements are often significantly higher dollar amounts than the face-value PD award because they include compensation for giving up future medical benefits.
Important: Accepting a C&R settlement means you give up the right to future workers' comp medical treatment for the injury — even if you later need surgery or additional care. The decision between Stip and C&R is one of the most consequential choices in your case. It depends on your age, the nature of the injury, whether you have private insurance, and your overall treatment needs. This is not a decision to make without specialist guidance.
To understand how PD ratings translate into full case values — including future medical care, vocational rehabilitation voucher rights, and the supplement job displacement benefit under Cal. Lab. Code §4658.7 — call (818) 794-9947 for a free case review.
The Supplemental Job Displacement Benefit
When an injured worker cannot return to their previous job due to permanent work restrictions, and the employer cannot offer modified or alternative work, they may be entitled to a Supplemental Job Displacement Benefit (SJDB) — a nontransferable voucher for education or retraining, currently valued at $6,000 under Cal. Lab. Code §4658.7.
The SJDB is separate from PD payments but is often negotiated as part of the same settlement. Insurance carriers sometimes fail to mention it. Knowing it exists — and claiming it — is one more way a specialist ensures you receive every benefit the law entitles you to.
What to Do If You've Received a PD Rating
If you've received a PD rating and you're trying to decide what to do next, here is the practical sequence:
- Request the full QME or AME report — not just the rating summary. The full report shows you the methodology, the WPI table citations, and the apportionment analysis. You are entitled to this document.
- Check the date of injury on the rating form — for cumulative trauma claims especially, verify that the date applied matches the legal date of injury, not just the date of the last incident.
- Identify whether apportionment was applied — look in the report for the word "apportionment" and any stated percentage. If it appears, the doctor should have provided a causation analysis. If they didn't, that's a challenge point.
- Verify the occupational group code — look at the rating string and compare it to the actual physical demands of your job.
- Calculate the dollar value using the rate table — even a rough calculation using the table above will tell you whether what you're being offered is within range or not.
- Call a specialist before you sign anything — a C&R settlement signed today permanently closes future medical rights. That decision cannot be undone.
Frequently Asked Questions
How is permanent disability calculated in California?
Permanent disability in California starts with a WPI (whole person impairment) percentage assigned by a doctor using the AMA Guides 5th Edition. That WPI is then multiplied by the 1.4 FEC modifier (for injuries after January 1, 2013), adjusted for your occupation and age using the DWC's Permanent Disability Rating Schedule, and converted into a final PD percentage under Cal. Lab. Code §4660. That percentage determines the number of weeks of PD payments and the weekly dollar rate under Cal. Lab. Code §4658.
What does a 50% PD rating mean in California?
A 50% permanent disability rating means the WCAB has determined that your work injury has permanently reduced your ability to compete in the open labor market by 50%. Under California's benefit rate schedule for recent injuries, a 50% PD rating entitles you to several hundred weeks of PD payments at a weekly rate of approximately $270–$290. The total dollar value of a 50% PD award for recent-year injuries is typically in the range of $114,000–$120,000 in PD benefits alone — not counting the value of future medical care if you settle via Stipulation rather than C&R. Call (818) 794-9947 for an estimate specific to your date of injury.
What does my workers' comp rating mean?
Your workers' comp PD rating is a percentage that tells you how permanently your work injury affects your earning capacity. Each percentage point corresponds to a specific number of weeks of weekly benefit payments under Cal. Lab. Code §4658. The higher the rating, the more weeks and the higher the total dollar value. The rating also affects your settlement value — both in Stip settlements (ongoing weekly payments) and C&R settlements (lump-sum amounts that factor in PD plus future medical care).
How much is a 25% PD rating worth in California?
A 25% permanent disability rating in California for a recent-year injury (2023-2026) is worth approximately $45,500 in total PD benefits, based on roughly 160 weeks of payments at the applicable weekly rate of approximately $265. This does not include the value of future medical care if your claim remains open, or the SJDB voucher if you cannot return to your prior position. The actual value of a 25% PD case at settlement — including future medical rights traded in a C&R — may be significantly higher. Call (818) 794-9947 for a free case-specific estimate.
What is the average PD rating in California workers' comp?
The California DWC does not publish a single "average" PD rating across all injuries. However, data from the WCAB shows that the majority of indemnity claims (claims involving more than medical treatment only) resolve with PD ratings in the 5%–30% range. Ratings above 50% are substantially less common and typically involve severe orthopedic injuries, traumatic brain injuries, or multiple body-part impairments combined. Higher-risk occupations — construction, warehouse, manufacturing, transportation — tend to produce higher PD ratings for the same diagnosis because the occupational group tables assign greater weight to physical limitations in physically demanding jobs.
How do I dispute a PD rating?
To dispute a PD rating in California, you (or your attorney) must file a formal objection through the QME (qualified medical evaluator) process under Cal. Lab. Code §4062. This triggers a new panel QME evaluation by a doctor selected from a DWC-approved list, who will independently evaluate your impairment. If the new QME produces a different WPI, the new rating is used going forward. You can also challenge apportionment findings, occupational group classifications, and the methodology used by the original evaluator through formal WCAB proceedings. The deadline to object to a QME report is strict — contact a specialist as soon as you receive the rating to preserve your rights.
Can I go back to work and still receive PD benefits?
Yes. Permanent disability benefits are separate from temporary disability benefits and are based on the permanent functional loss from the injury — not on whether you are currently working. You can return to work and still collect PD payments. However, if you return to work and your earnings are above a certain level, there may be calculations that affect your overall settlement value in a C&R context. Returning to work does not forfeit your PD rights under California workers' comp law.
What happens if I don't have an attorney for my PD rating?
Unrepresented workers accept the PD rating assigned by the insurance carrier's QME far more often than represented workers — and that rating is almost always on the low end of the defensible range. Studies of California workers' comp outcomes consistently show that represented workers recover materially more in PD settlements than unrepresented workers, often by a factor of three to five. There is no upfront cost to hiring a workers' comp attorney — contingency representation means no fee unless you win. If you have received a PD rating and do not have an attorney, call (818) 794-9947 for a free review before you sign anything.
Was Your PD Rating Fair? Find Out — Free.
A PD rating is not a final verdict. It is a calculation — and calculations can be wrong. The WPI, the occupational group, the apportionment percentage, and the benefit rate all have room for error, and insurance carriers benefit when those errors go unchallenged.
We've reviewed thousands of PD ratings for California injured workers. We know what an accurate rating looks like, and we know where underpayments are buried.
Your Injury. Your Rights. Our Fight.
Call (818) 794-9947 for a free 15-minute PD rating review with a 99.9%-win California workers' comp specialist. No fee unless we win. Available in English and Spanish.
Reviewed by Minas Nordanyan, CA Bar #296806. Last legal review: May 2026. This article is provided for general informational purposes only and does not constitute legal advice. California workers' compensation law is complex and fact-specific. For guidance on your individual claim, call (818) 794-9947 to speak with a licensed California workers' compensation attorney.
