A permanent and total disability such that the Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to last for a continuous period of not less than 12 months, or is, by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than 12 months, receiving income replacement benefits for a period not less than three months under an accident and health plan covering Employees of the Employer. A Participant will be deemed to be subject to a Disability if the Participant is determined to be disabled under a long-term disability plan of the Employer that uses a definition of “disability” that complies with one or both of the foregoing. In addition, a Participant will be deemed to be subject to a Disability if the Participant is determined to be totally disabled by the U.S. Social Security Administration.