This support document contains a literature review for the project entitled: "Engaging More Employers in Nationally Recognised Training to Develop Their Workforce. Research Report" (ED616445). The aim of the overall research project is to identify strategies to improve employer uptake of nationally recognised training in the current environment. This requires deepening the understanding of employer thinking and approaches to workforce training in general and in relation to nationally recognised training in particular. There is a significant body of literature on employers and workforce training. This literature review points to factors that affect employer training choices for their workforce as background to identifying strategies for improving employer engagement in nationally recognised training to develop their workforce. It suggests that an ongoing adaptation of the national vocational education and training (VET) system is required to meet the continuing needs of Australia's workforce. [For "Engaging More Employers in Nationally Recognised Training to Develop Their Workforce: Peak Body Interviews - Support Document 2," see ED616447. For "Engaging More Employers in Nationally Recognised Training to Develop Their Workforce: Employer Interviews - Support Document 3," see ED616448.]