If you have any taxable benefits, you should receive a Form 1099-G from the California EDD. They are usually mailed out the last week of January.
If you leave work because of a disability and receive disability benefits, those benefits are not reportable for tax purposes.
However, if you are receiving unemployment benefits, become ill or injured, and begin receiving disability benefits; those DI benefits are considered a substitute for UI and are reportable for tax purposes up to your UI maximum benefit amount.
From the California Employment Development Department FAQ, "According to the IRS, disability benefits that are considered a substitute for unemployment are taxable. Federal Tax Regulation Section 1.85-1 states that Disability benefits are considered to be a substitute for Unemployment benefits when paid to an unemployed taxpayer who is not eligible for Unemployment benefits solely because of the disability."
For more information, you can visit the California EDD website at the link below:
http://www.edd.ca.gov/Disability/SDI_FAQ_for_1099G.htm
