There are many different types of jobs in California, and those employees practice many different religions. These religions each have their own teachings, beliefs and attire. For the most part, the attire should not affect an employees' ability to do their jobs, and therefore, employers are required to allow their employees to wear the religious attire at work.
Some employers may not agree with certain religious practices or the religion in general, but this does not mean that they can treat that employee differently or fire them for wearing the religious attire. Employers are not allowed to do this, even if their customers do not like that the employee is wearing certain clothing. In addition, even if the employer has certain grooming policies for all their employees, they must make reasonable accommodations to allow for that employee to wear their religious attire.
There are a couple exceptions to this rule, such as if allowing the religious attire would create an undue hardship on the business or if the employee is simply wearing the religious attire for fashion purposes. However, if the employer prevents the employee from wearing their religious attire or fires them for doing so they may be required to compensate the employee based on the wrongful termination. This compensation can be in the form of back pay, including lost benefits, potentially future pay and other damages associated with the actions of the employer.
People in California are free to practice whatever religion they would like to practice. This includes being able to practice all aspects of the religion, such as wearing certain clothing or other attire. These people are also allowed to do this at their jobs, regardless of employers' personal beliefs. If the employer takes adverse action against an employee due to their religious beliefs, they may be required to compensate the employee. These are fact-specific cases though, and experienced attorneys may be able to guide one through it.