>The facts show that just like the amount of labor is not fixed, neither is the size of the economy (fixed pie fallacy) and as more work is done, the economy grows
Your reply is a glib thought-terminating cliche strawman that doesn't address their point at all. Interesting!
Those theories are based mainly on the effect of Cuban immigration in Miami, however they lack a control so you can't really conclude anything.
Besides, yeah, if you hire people who will work for any salary, the amount of jobs will increase, but salaries will decrease, for locals as well. After some time, locals will flee sectors where the migrant workers are brought in, creating further self-inflicted "labor shortages"...requiring more migrants!
The main winners are capital owners, who, thanks to the migrant workers, can now acquire a larger part of the added value generated by workers.
But a jobs worth of GDP was lost due to the lost consumption. Harder to measure for 1 person but imagine 100k people suddenly left a city. That would be felt somewhere. Dry cleaners, cafe, supermarkets etc.
This might be less true if there is resource starvation but we have transport and imports and exports. You can accomodate more people and feed them.
There are not enough qualified people in any particular country for all the possible new technologies that could be deployed. You're not likely to hire your plumber to program a webapp.
That doesn't mean your plumber isn't qualified—just that people looking for webapps want to hire workers who know how to make them.
So many computer science grads can't find work many have left the field. I don't think we will run out of workers.
There is the other side plenty of workers successful at programming language could be trained to fill any gap. That's what happened in the 50s and 60s..
Companies struggle to hire at a rate they want to pay. They don't struggle to hire at a market rate pay or more. Funny how that works.
PS The number of roles that there aren't qualified Americans for could be counted on one hand. This has always been about reducing salaries, not shortages.
I highly doubt a company can find 20k senior Photolithography experts in rural Nebraska if a company wanted. No matter what money they are paying. They'll have to bring them in.
Of course I am exaggerating, but this is not a 1 dimensional problem.
it's a companies not wanting to spend any amount of time and money training an employee and wanting 100% utilization the second the employment starts issue.
https://en.wikipedia.org/wiki/Lump_of_labour_fallacy