Yes, in California, there is at-will employment, meaning an employee can quit at any time, and an employer can terminate an employee without cause. However, this advice should be taken with caution. If an employee has made complaints about workplace issues, such as sexual harassment or discrimination, it's not advisable for an employer to terminate them, as it could be considered retaliation for making a lawful complaint. Before making any decisions, employers should carefully evaluate the situation and address any valid complaints properly.