California Permanent Disability Rating: 2005 PDRS & Calculation (2026)

California uses the most complex permanent disability rating system in the nation. Understanding how your permanent disability (PD) rating is calculated helps you ensure you receive fair benefits.

California's Rating System

Most complex in U.S.: Combines multiple factors beyond just medical impairment

Uses:

• 2005 Permanent Disability Rating Schedule (PDRS)
• AMA Guides to the Evaluation of Permanent Impairment
• Occupation adjustments
• Age adjustments
• Diminished future earning capacity calculations

Step-by-Step Rating Process

Step 1: Doctor Assigns Impairment

Authorized treating physician (ATP) or Qualified Medical Evaluator (QME) evaluates using AMA Guides

Assigns: Percentage of impairment to affected body part(s)

Example: 15% impairment to lumbar spine

Step 2: Convert to Whole Person Impairment

Using 2005 PDRS: Body part impairment converted to whole-person percentage

Example: 15% lumbar spine impairment = 24% whole-person impairment (after conversion)

Step 3: Adjust for Occupation

FEC (Future Earning Capacity): Adjustment based on how injury affects your specific occupation

Categories:

• Group 1: Sedentary
• Group 2: Light
• Group 3: Medium
• Group 4: Heavy
• Group 5: Very Heavy

Impact: Physical jobs (Groups 4-5) get higher adjustments for physical injuries

Example: Back injury affects construction worker (Group 5) more than office worker (Group 1)

Step 4: Adjust for Age

Older workers: Higher ratings (harder to retrain, less time to adapt)

Age groups:

• Under 40: Lower adjustment
• 40-49: Moderate
• 50-59: Higher
• 60+: Highest

Example: Same injury, 25-year-old gets lower rating than 55-year-old

Step 5: Calculate Final Rating

Combined adjustments: Occupation and age factors applied

Final rating: 1-100% permanent disability

Example calculation:

• Medical impairment: 24% whole person
• Occupation: Heavy labor (multiplier increases rating)
• Age: 52 years old (multiplier increases rating)
• Final rating: 35% permanent disability

Payment Calculation

Based on:

• Disability percentage
• Date of injury
• Whether you returned to work for same employer

2024-2026 rates (injuries on/after 1/1/2024):

• 1-25%: $170-$290 per percentage point
• 26-99%: Higher rates

Example: 35% PD rating ≈ $30,000-$35,000 total

Paid: Bi-weekly over time (or lump sum in settlement)

Factors Affecting Rating

Medical: Severity of impairment, functional limitations

Occupational: Physical demands of your job

Age: Older = higher rating

Diminished future earning capacity: Lost ability to earn

Multiple injuries: Combined using special formulas

Disputes Over Rating

Common disagreements:

• Medical impairment percentage
• Occupation classification
• Age calculation
• Apportionment to pre-existing conditions

Resolution:

• QME evaluation
• Agreed Medical Evaluator (AME) if parties agree
• WCAB hearing if can't resolve

Apportionment

What it is: Dividing disability between work-related and non-work causes

Applies when: Pre-existing conditions or multiple injuries

Impact: Reduces your PD award

Example: 40% total disability, 25% apportioned to pre-existing arthritis → You receive benefits for 15% PD only

Learn More

• California Workers' Comp Benefits
• Maximum Medical Improvement
• California Workers' Compensation Overview

Legal Disclaimer

Permanent disability ratings are complex. Consult a qualified California workers' compensation attorney to ensure your rating is accurate and fair.

Last updated: January 5, 2026