Taken directly from ssa.gov: https://www.ssa.gov/OACT/COLA/central.html https://www.ssa.gov/OACT/COLA/central.html I suspect the difference is that "full-time

Taken directly from ssa.gov: https://www.ssa.gov/OACT/COLA/central.html https://www.ssa.gov/OACT/COLA/central.html I suspect the difference is that "full-time wage and salary workers" is a much smaller group than "all workers". I admit that I used the word salary in the original post though.