For disability insurance purposes, an insured’s disability that meets the requirements of the definition of total disability included in the disability insurance policy or policy rider and that qualifies for payment of the specified disability benefits. When a disability begins, total disability is usually the complete and continuous inability of an insured to perform the essential duties of his regular occupation. After a disability has existed for a specified period, total disability usually exists only if the insured is prevented from working at any occupation for which he is reasonably fitted by education, training or experience. (See Disability; Residual disability).