Robert Rasinski says he suffers back pain and post-traumatic stress.
However, the pension board says the 38-year-old bears significant responsibility for the accident.
The board awarded Rasinski an ordinary disability pension that includes health benefits and equals 40 percent of his $100,688 salary. Rasinski will get no more than $3,000 a month, roughly $2,000 less than he had hoped for.
Investigators found that Rasinski was driving Corzine at 91 mph when the SUV struck another vehicle and veered into a guardrail in 2007.
Corzine suffered 15 broken bones and spent 18 days in the hospital.
Rasinski served a three-day suspension after an internal investigation said the crash was preventable.
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Information from: The Star-Ledger, http://www.nj.com/starledger