Since you are living and working in California then your employer should only be withholding CA state income taxes from your wages, no other state withholding. You will need to provide to the employer the CA state Form DE-4 for the state withholding - http://www.edd.ca.gov/pdf_pub_ctr/de4.pdf
See this answer on a related question here - https://ttlc.intuit.com/questions/3384327-do-i-need-to-still-pay-mass-taxes-being-a-full-time-teleco...
