This study assesses the literature review of cost-benefit analyses from a tax-payers perspective of the labour market inclusion of persons with disabilities. It includes an extensive and structured overview of relevant global literature (studies and research) in a period of over 30 years. The main findings of this study on the impact of inclusive labour markets for persons with disabilities are the following: 1) Disabled people, government and taxpayers are likely to benefit financially in the long-term from greater investment in employment in the open labour market of persons with disabilities; 2) There is a large variety of models which support persons with disabilities in work, training and employment, working with different publics and different objectives; 3) In terms of models supporting access to the open labour market, supported employment and individual placement and support have proved to be effective in doing so and with high cost-benefit return for the tax payer.