About Projections - Developing employment projections is a four
step process. We first gather historic industry employment to identify
trends. Using these trends and other factors we then project the industry
employment two or ten years into the future. At the same time we are
collecting occupational employment within industries which is referred to as
staffing patterns. Once we have the industry projections and these
staffing patterns we obtain the occupational employment projections by applying
the staffing patterns to the base and projected year industry employment.
Because we know that occupational employment changes over time and is not static,
adjustments are made to the staffing patterns to predict future staffing
needs. We also estimate the number of openings that are expected to
occur in each occupation over the projection period. There are two
sources of openings that are estimated - openings due to growth and openings
due to replacement needs.