This document discusses work sampling, a methodology used to determine the percentage of time spent on various work activities. It involves making random observations of a job over time and calculating the proportion of observations where a particular activity was observed. The key steps include defining activities, determining the needed sample size, conducting random observations during a sampling period, and re-computing values periodically. Work sampling is used for setting time standards, measuring performance, determining delays and cycles, and aiding decisions around staffing, safety, and efficiency.