Occupational Group Number (OGN)
Legal basis: LC §4660.1
Definition
A classification number in the Permanent Disability Rating Schedule that groups similar occupations together for purposes of applying occupational variants to disability ratings. Each occupation is assigned an OGN based on the physical and mental demands of the job, which determines how a given impairment affects that worker's earning capacity.
Key Facts About OGN in 2026
QME Physicians in CA
~2,500
Evaluation Fee Range
$2,500-$4,000
Report Deadline
30 days
Avg AI-Assisted Turnaround
14 days
Related Terms
Frequently Asked Questions
What is a Occupational Group Number (OGN)?
A classification number in the Permanent Disability Rating Schedule that groups similar occupations together for purposes of applying occupational variants to disability ratings. Each occupation is assigned an OGN based on the physical and mental demands of the job, which determines how a given impairment affects that worker's earning capacity.
What is the legal basis for OGN in California workers' compensation?
Occupational Group Number is governed by LC §4660.1 under California workers' compensation law. This statute defines the requirements, procedures, and standards for occupational group number in the workers' compensation system as of 2026.
How is occupational group number calculated in California?
Occupational Group Number in California workers' compensation is typically determined using the AMA Guides to the Evaluation of Permanent Impairment, 5th Edition (2001). QME and AME physicians use standardized rating methods to ensure consistency across evaluations.