Foreman-Delay Surveys: Work Sampling and Output

The usefulness of foreman-delay surveys (FDS) for performance measurement and productivity improvement at construction sites is evaluated by comparison with production rates and work sampling observations. A comparison of measurements obtained with concurrent work sampling and FDS at a nuclear plant construction site is presented. This comparison is followed by an examination of the changes in key site labor performance factors during the implementation of the work sampling and FDS programs at this site. An examination of relationships between FDS reported values, performance factor, and weld production for the major mechanical contractor of a refinery construction project is also presented. Both projects utilize union labor.