An Ergonomics Approach for the Design of Manual Materials-Handling Tasks
提出了工作严重性指数（JSI）作为手工物料搬运任务设计和员工岗位分配的工具，通过任务最大重量与工人举重能力的比值来评估工作负荷，并展示了JSI与伤害频率、严重程度和成本的关系。
The frequency, severity, and cost of manual materials-handling (MMH) injuries dictate that the design of these tasks and the assignment of employees to them ensure that the demands of the job do not exceed the capacity of the worker. This paper proposes the use of the job Severity Index (JSI) as a tool for job design and employee placement. The JSI is defined as the time- and frequency-weighted average of the maximum weight required by each task divided by the selected lifting capacity given the lifting task conditions. This paper illustrates the relationship between the JSI and the frequency, severity, and cost of MMH injuries. Procedures for job design and employee placement based on the JSI are discussed and examples of the use of the JSI in industry are given.