Ergonomics is the study of optimizing the interaction between workers, equipment, tasks, and their environment to improve efficiency and comfort. The term “ergonomics” is derived from two Greek words: “ergon,” meaning work, and “nomos,” meaning laws. This article presents a literature review on ergonomics and a case study focused on the ergonomic analysis of an excavator operator using the 3D analysis software RAMSIS. A 3D CAD model of the excavator is provided, with manikins created based on an anthropometric database. The analysis includes three manikins representing the 5th percentile male, 50th percentile male, and 95th percentile male. Each manikin is positioned as the driver within the excavator cabin, and an ergonomic assessment is carried out for both the current and neutral postures. The report focuses on the application of advanced RAMSIS analysis features to conduct a detailed ergonomic assessment. Specifically, it examines comfort analysis to evaluate posture data and identify potential discomfort areas within the cabin following adjustments to the steering wheel position. The report documents posture data results after incremental adjustments to the steering wheel position. For the literature review, databases such as Scopus and Scite.ai, along with the bibliometric software Biblioshiny and VOSviewer are utilized.