Failure to report work and wages while receiving UI benefits will result in disqualifications, overpayments that must be repaid, and penalties. Claimants can avoid overpayments, penalties, and disqualifications by properly reporting their work and wages. You can find more information on this topic along with specific directions on how to properly report your work and wages by referring to the 
Unemployment Insurance Benefits: What You Need to Know (DE 1275B), that was mailed to you when you filed your claim. Or refer to the 
UI handbook A Guide to Benefits and Employment Services (DE 1275A). Both are available online at 
www.edd.ca.gov/forms