Small businesses won't be able to sign up online to participate in California's health care exchange. 

Covered California officials say they're shutting down the part of their website used for enrollment in the Small Business Health Options Program.  

They say they're making the move after getting requests for changes to that part of their website, which deals with management of applications, including determination of eligibility, implementing group changes and issuing invoices.  

This shut down happens tomorrow.

Covered California says small business owners and certified insurance agents will still be able to sign up over the phone.  

The online enrollment function of their website isn't expected to be back up and running until the fall this year.