The study shows that tribal gaming operations have helped create 52,000 jobs in different industries throughout the state.
It's also provided a ripple effect worth $7.5 billion to California's economy.
Steve Stallings is with the California Nations Indian Gaming Association, which commissioned the study.
Stallings: "Tribes are not just creating jobs they're creating very good paying jobs, and you'll see from the report sometimes two times the average wage of a similar job off the reservation in addition to that those jobs have benefits."
The study was conducted by Beacon Economics.
It also showed that tribal gaming generates almost $467-million in state and local tax revenues.
Governor Jerry Brown is expected to decide in the next month whether to approve two tribal casinos to add to the 60 already operating in the state.