Retirement is a multi-phased dynamic process whereby retirees draw pensions at a specific age. There are three types of retirement models, viz., the Antecedent Model, the Process Model and the Outcome Model. The Antecedent Model of Retirement includes Classic Antecedent Model of Retirement and Multilevel-model of Retirement, which address antecedents of retirement respectively in individual- environment and macroscopic views. The Process Model of Retirement involves the Three-Phase Model of Retirement Decision-Making, the Temporal Process Model...