The thesis explores the use of virtual simulation tools particularly Digital Human Modeling (DHM) — in different fields. It gives special attention to how DHM can be used in production planning and also the pre-emption of MusculoSkeletal Disorders (MSDs); discusses the evolution and spheres of Motion Capturing and VR techniques. The paper talks about the rising significance of virtual simulation in industry, lists different software tools and their features. It presents an ergonomic evaluation case study using Jack software; a case on Motion Capture implementation at Ford; a VR implementation case at General Motor. These cases underscore possibilities for improving workplace design, task analysis towards promoting employee well-being and system effectiveness.