Can you elaborate on this a bit?
Thumbnail sketch, during the period Great Depression - WWII, it was discovered that govt spending could create full employment. This lasted until the oil commodity price shock inflation of the 70's. This inflation was attributed to the "wage price spiral" i.e. higher wages are inflationary. Ergo, in order to keep inflation in check, wages must be kept down, govt spending must be kept down. Thus the NAIRU (non accelerating inflation rate unemployment) was born, considered to be at that time, IIRC, 6%.
So while it takes less labor to do all the necessary stuff, that's a problem not a solution because only the private sector can absorb excess labor. Govt cant because for one, it must borrow to spend(untrue but that's the CW), and two employing the unemployed is inflationary because NAIRU.
Whereas one might think that there's lot of stuff that needs to be done, and there also people and resources to do that stuff, it can't happen with the above policies.