A Participant’s Disability as defined under his Bonus Agreement, or, in the case of a Participant who is not a party to a Bonus Agreement, the Participant’s becoming incapacitated or disabled by accident, sickness or other circumstance which creates an impairment (despite reasonable accommodation) that renders him mentally or physically incapable of performing the duties and services required of him hereunder for a period of at least six months during any 12-month period as determined in good faith by the Plan Administrator.