 This systematic review assessed observational methods used to measure biomechanical exposure in occupational settings. The review found that most of the methods have moderate to good agreement when compared to video recordings, which are considered the gold standard for measuring biomechanical exposure. However, postures of the wrist and hands, as well as trunk rotation, proved to be more difficult to observe accurately. Additionally, intra- and inter-observer repeatability were reported for 7 and 17 methods, respectively, and were deemed to be mostly good or moderate. Overall, the review concluded that with proper training, observers can achieve consistent results on clearly visible body postures and work activities. Users should consider their needs and assess how results will impact decision-making before choosing a particular method. This article was authored by ESA Pekka Takala, Irmily Pekkinan, Michael Forsman, and others.