If there are people working 3x as hard, why aren’t they negotiating for 3x the pay? It would create an incentive for the business to fire the people only doing

If there are people working 3x as hard, why aren’t they negotiating for 3x the pay? It would create an incentive for the business to fire the people only doing 1/3 the work, or else cut their pay by 2/3rds in accordance with the value of the labor. This does not happen because the workers involved don’t have that kind of power. The power imbalance between the two parties is so vast that the laborers have no choice but to accept unfair terms.