If you have long-term disability insurance, either privately or through your employer, in California, you expect to be able to use it if an accident occurs that puts you out of work. Unfortunately, it is in the insurance company's best interest to deny your claim and they oftentimes go to long lengths to "prove" your disability is not that bad. It may help to know how they investigate claims and what you can do to improve your chances of approval.
Even if you enjoy your job in California, you probably do not want to do it forever. Like many employees, you probably have aspirations of retiring someday. To that end, you may participate in a pension plan that provides benefits when you stop working, but you may have doubts or fears about your ability to access that money when the time comes.