A systematic scoping review of research published between 2000 and 2020 on employment of people with disabilities, that was funded by the National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR), was conducted by CeKTER researchers at Boston University. All papers comparing people with disabilities to those without were excluded from the systematic scoping review. Among over 100 publications reviewed, there was a wide and very disparate array of findings with numerous variables used and varying research questions. This result belies summative findings. There are numerous ways of organizing the disparate findings. This brief is part of a series of findings from CeKTER’s systematic scoping review. In this brief, we report on findings revealing how determinants representing different aspects of vocational rehabilitation (VR) services may impact their utilization and outcomes. Please note that all comparisons are always about corresponding peers with disabilities.