Semore v. Pool(1990) 217 Cal.App.3d 1087 posted athttp://login.findlaw.com/scripts/callaw?dest=ca/calapp3d/217/1087.html
In this case, we find that the right of privacy in the California Constitution protects Californians from actions of private employers as well as government agencies.
Accordingly, when a private employee is terminated for refusing to take a random drug test, he may invoke the public policy exception to the at-will termination doctrine to assert a violation of his constitutional right of privacy.http://www.calbar.ca.gov/Public/Pamphlets/Employee.aspx#2
2. Can an employer ask me to take a drug test?
Yes, if you are a job applicant. On the other hand, if you are already an employee, your employer usually must have some legitimate or important interest in requiring drug testing, such as a reasonable suspicion that you are using drugs. If your job involves certain safety issues, such as a job driving a passenger bus, your employer has greater rights to drug test you, even without giving you advance notice.
The landlord/employer has no right to search your belongings or enter your unit without consent. If the landlord has a reason to enter the unit, you are entitled to 24 hours advance notice, seehttp://www.nolo.com/legal-encyclopedia/chart-notice-requirements-enter-rental-29033.html
Looking through your property and entering your home are not legal even if the employer has probable cause. Probable cause alone in general does not let a police officer enter your home or search your property without a warrant. And it does not allow a landlord to do so either.
You can get a free consultation from some of the employment attorneys listed by location athttp://lawyers.findlaw.com/lawyer/practicestatecounty/Employment-Law----Employee/California/Inyo
Please follow up on this with a local attorney. My opinion is that the employer has violated your right to privacy.
I hope this information is helpful.