The exploitation of cheap labor, a necessity ?

The past year has put into the spotlights the way our society is relying on cheap labor, often foreign workers, sometimes illegally working in the country . Covid crisis, migrating crisis and also Brexit have shownt the great need of this labor to assure the continuity of supply chain, from the farm to our fridge, from the restaurant to our table. We rely on all these individuals, which are invisible to us or that we just prefer to ignore. If tomorrow, cheap labor was striking worldwide, probably all existing services would be affected.