B: Sample Survey

C: Calculation of Full-time Equivalent Employment

The following are details of calculations for the average number of hours per full-time equivalent (FTE) or person year of employment.

D: Summary of Direct Jobs and Person Years

Table D-1: Direct Jobs and Person Years

E: Inferred Employment

Because not all employers responded to our requests for information in the survey, we statistically inferred some employment data to replace that which otherwise would be missing.

F: Contract Employment

Some firms contract out services that they do not have expertise in providing or when there are cost advantages to doing so. For example, many airport firms contract out janitorial and maintenance services.