https://krugman.blogs.nytimes.com/2010/02/13/the-case-for-hi...
"in the long run, it’s really, really hard to cut nominal wages. Yet when you have very low inflation, getting relative wages right would require that a significant number of workers take wage cuts. So having a somewhat higher inflation rate would lead to lower unemployment, not just temporarily, but on a sustained basis."
Worker pay not keeping up with inflation is not merely an effect of inflation. It is the policy goal.