Complete this form so that your employer can withhold the correct California state income tax from your paycheck. Enter Personal Information.The process to submit an employment certification is completed electronically through myCalPERS. Learn how to complete the DE 4 form, California's Employee's Withholding Allowance Certificate, to withhold state income tax accurately. How to fill out the California Employment Withholding Allowance Certificate? Both Federal W4 Form and California DE 4 Withholding Certificate must be provided to newly hired employees. 4. It's up to the employee to maintain their employment to the satisfaction of the company they work for. Employers must accept a complete and sufficient certification, regardless of the format. In the dynamic landscape of California's labor laws, the Family and Medical Leave Act (FMLA) stands as a crucial pillar of protection for employees. The work permit is also a certificate of Age pursuant to California Education Code 49114.