For people with disabilities and their families, career development and transitin from school to adult life comparatively requires a more extensive amount of planning, knowledge, and coordination. Recently, transition services related to career development theories were broadly discussed and adopted in the field of disabilities. It is also regulated in the Taiwan Carrer Transition Integrated Implementation Program for People with Disabilities (2002) that to connect the welfare demand of individuals with disabilities in different stages of their careers, the related departments of the governments of individual levels shall aggressively communicate and corrdinate with each other and make career transition plan to render individuals with disabilities with complete and continuous services. However, from the career development theory perspective, the conceptualizations of career transition and the transition to employ yment for individuals with disabilities were seldom discussed and needed to be paid more attention in Taiwan. This paper took the career transition perspective on career development theories and applied the concepts of career development and career transition to the social welfare and the disability research academic arena in Taiwan. Recommendations were also offered concerning the implications of the career development theories for educational practices, social welfares and transition services.