The way it works in capitalist societies is that their employer fires them when it no longer needs them, and it's up to the individuals to find something else to work on. The doctrine claims that "the market" will find something for them. Which is true in a sense, although the specifics can be extremely dystopian.
If you want to put that responsibility for finding work on someone else, you have quite a lot of political work to do to convince people that it should be the way you propose.