The California Chamber of Commerce (CalChamber) is the largest broad-based business advocate to government in California. A n ... ot-for-profit organization with roots dating to 1890, CalChamber promotes international trade and investment to stimulate California's economy and create jobs. The CalChamber store provides business and human resource managers a one-stop shop for employer/HR compliance products and services. The comprehensive online resource, along with sister site, HRCalifornia.com, is designed by employment law experts and provides up-to-the minute information on California employment law topics such as overtime pay, calculating work hours, employee handbooks, sexual harassment prevention and training, family and medical leave, workers' compensation and exempt vs. nonexempt employees. read more