My aunt used to work at a school that did not have this policy in place. The principle had a debilitating head injury that put her in a coma; she is now unfit to work for the rest of her life. It was tremendously sad for everyone involved, but it has also severely strained the school financially. Under Massachusetts law, the school is required to pay a large percentage of her original salary now that she is disabled. Had they taken out an LTD insurance policy this wouldn't have been a problem.