Explanation:

The above considerations also underlie the framework definition used in the Vocational Rehabilitation and Employment (Disabled Persons) Convention, 1983 (No. 159) (ILO 1983). Article 1.1 contains the following formulation: "For the purposes of this Convention, the term 'disabled person' means an individual whose prospects of securing, retaining and advancing in suitable employment are substantially reduced as a result of a duly recognized physical or mental impairment". This definition contains the following constituent elements: the reference to mental or physical impairment as the original cause of the disability; the necessity of a state recognition procedure that-in accordance with the respective national realities-determines who should be considered disabled; the determination that disability is not constituted by the impairment itself but by the possible and real social consequences of an impairment (in this case a more difficult situation on the labour market); and the established entitlement to measures which help to secure equality of treatment on the labour market.