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✦ Certified Specialist in Workers’ Compensation Law — Certified by the State Bar of California, Board of Legal Specialization ✦
Serving injured workers across California. Board-certified specialist; no fee unless we win.
By Eman Yazdchi, Esq. · Certified Specialist in Workers' Compensation Law, State Bar of California Board of Legal Specialization
In California, a Palmdale worker with permanent disability from a work injury gets a rating, an indemnity award, and future medical care. AMA Guides 5th Edition, occupation, and age drive the rating. Yazdchi Law, a Certified Specialist in Workers' Compensation Law firm based in Palmdale, handles AV PD cases at the Van Nuys WCAB. Free consultation.
Permanent disability is the central dollar issue in nearly every Palmdale workers' comp case that does not resolve on medical-only basis. After a Palmdale worker reaches maximum medical improvement — typically months or longer after the date of injury, depending on diagnosis and treatment — the medical-legal evaluator issues a permanent-and-stationary report that assigns a Whole Person Impairment percentage under the AMA Guides 5th Edition. That percentage flows through the Permanent Disability Rating Schedule, with adjustments for the worker's occupation and age at injury, to produce the final permanent disability percentage that drives the indemnity award.
The same percentage produces different dollars for different Palmdale workers. A Plant 42 fastener installer and a Palmdale Regional Medical Center transport tech can produce the same Whole Person Impairment number on the same lumbar herniation and yet receive different permanent disability ratings because the occupational variant under the 2005 PDRS treats their physical demands differently. A 50-year-old worker and a 35-year-old worker with the same diagnosis and the same impairment also rate differently because of the age adjustment. The rating mechanics matter — and they are the work specialist representation does.
Yazdchi Law's office at 1125 W Avenue M-14 in Palmdale is the firm's home base — 0 miles from this city. Eman Yazdchi is a Certified Specialist in Workers' Compensation Law, certified by the California Board of Legal Specialization, State Bar of California. Palmdale permanent-disability cases are heard at the Van Nuys district office of the Workers' Compensation Appeals Board at 6150 Van Nuys Boulevard, Van Nuys. See Yazdchi Law's permanent-disability case results.
A Palmdale permanent-disability rating moves through a defined sequence of steps, and each step is contested. The Whole Person Impairment number is contested at the medical-legal evaluation, the occupational variant is contested at the rating-out, and the apportionment percentage is contested through every step of the case. The final number is rarely what the carrier puts on the table first. For the statewide framework, see California workers' compensation lawyer pillar.
Under California Labor Code §4660, permanent disability is calculated from a Whole Person Impairment percentage assigned per the AMA Guides to the Evaluation of Permanent Impairment, 5th Edition. Each body part has a different chapter: Chapter 15 for the spine using DRE Cervical, Thoracic, and Lumbar Categories; Chapter 16 for the upper extremity (shoulder, elbow, wrist) using range-of-motion methodology; Chapter 17 for the lower extremity (hip, knee, ankle). The Whole Person Impairment is assigned by a Qualified Medical Evaluator selected through the panel process under California Labor Code §4062.2 or by an Agreed Medical Evaluator stipulated by both parties. Statute deep-dive: California Labor Code §4660 (permanent disability rating).
The Whole Person Impairment is then run through the 2005 Permanent Disability Rating Schedule. The occupational variant adjusts the rating based on how physically demanding the worker's job is — a Plant 42 fastener installer, a Palmdale Regional Medical Center transport tech, and an Antelope Valley Mall cashier sit in different occupational groups with different multipliers. The age adjustment increases the rating for older workers because earning capacity is harder to restore. A 50-year-old Palmdale aerospace assembler with a fused single-level lumbar spine commonly produces a final permanent disability percentage in the 40%–65% range after these adjustments.
Under California Labor Code §4658, the final permanent disability percentage is converted into a number of weeks of indemnity, paid at a statutory rate set as of the date of injury. A worker with a permanent disability of 70% or higher receives a life pension after the regular permanent disability indemnity is exhausted. Permanent disability advances are paid under California Labor Code §4650 starting after the worker reaches maximum medical improvement, with the late-payment self-imposed increase if the carrier delays.
Apportionment under California Labor Code §4663 is the carrier's reliable opening on a Palmdale PD claim, and on an injured worker who has spent fifteen years at Plant 42 the MRI will support an apportionment argument. California law places the burden of proving apportionment on the employer, and the California Supreme Court in Brodie v. WCAB confirmed that asymptomatic pre-existing imaging findings, on their own, are a weak basis. A specialist medical-legal evaluator under California Labor Code §4062.2 fights apportionment on the merits, distinguishing the pre-injury asymptomatic state from the post-injury disabled state.
Injured at work? Call (661) 273-1780
Tap to call →Palmdale permanent-disability cases are heard at the Van Nuys district office of the Workers' Compensation Appeals Board at 6150 Van Nuys Boulevard, Van Nuys. Yazdchi Law appears at the Van Nuys WCAB constantly for AV PD claims, MSCs, and trials. The Division of Workers' Compensation publishes current PD rate schedules, the PDRS, and the panel-request procedure. Related coverage: Palmdale cumulative-trauma workers' comp.
Permanent-disability settlement magnitudes vary widely with rating, age, occupation, and apportionment. A 25%–40% PD rating in a Palmdale aerospace assembler commonly resolves in the high five figures to low six figures; a 40%–65% rating in a Plant 42 fifteen-year veteran with end-of-career restrictions resolves in the low to mid six figures plus future medical care under California Labor Code §4600 and a Supplemental Job Displacement Benefit voucher under California Labor Code §4658.7. The firm's historical case-result range for catastrophic injuries reaches $5,000,000 for spinal cord injury and $1,500,000 for cervical-spine injury. Related coverage: Lancaster permanent-disability workers' comp.
If a Palmdale worker's permanent restrictions prevent return to the position held at the time of injury and the employer cannot accommodate within 60 days of maximum medical improvement, the worker is entitled to a Supplemental Job Displacement Benefit voucher under California Labor Code §4658.7. The voucher can be used for retraining at College of the Canyons, Antelope Valley College, or another state-approved provider. Yazdchi Law P.C., 1125 W Avenue M-14, Suite A, Palmdale, CA 93551. (661) 273-3939. Free consultations for Palmdale injured workers, with appearances at Van Nuys WCAB.
Last reviewed by Eman Yazdchi, Esq., May 2026.
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