Look up the equivalent of the Department of Workforce Development for your state and find the employment and training section.

For example: https://dwd.wisconsin.gov/det/ and https://dwd.wisconsin.gov/dislocatedworker/

I think it's very unfortunate though that we have an economy where redundant pieces attempt not to disappear even if society is worse off. If people replaced by X technology could be assured that their QoL would not drop noticeably after being made redundant, we could likely forgo much unnecessary conflict between the worker class and upper class. Maybe it's impossible to do it while making sure the dislocated workers can be productive elsewhere, as I imagine many might not want nor be able to go through education again.