This seems like a pretty poor strategy for the involved companies.
1) It makes other companies (not involved in the agreement) more attractive, as their salaries will be closer to the salaries offered by the companies involved in the cartel.
2) This means that the pool of potential employees is reduced due the agreement, which means that the companies involved in the cartel will have to bear higher recruiting costs.
3) These recruiting costs make a mistake in hiring more costly. It gets harder to "test" employees and let them go when they are a bad fit, because expenditures from your HR budget are shifted to the front (on the promise of savings down the line).
4) Further, when the cartel breaks (as it will, each company has an incentive to cheat on the other members) the payoff of this inflated recruiting "investment" disappears.
1) It makes other companies (not involved in the agreement) more attractive, as their salaries will be closer to the salaries offered by the companies involved in the cartel.
2) This means that the pool of potential employees is reduced due the agreement, which means that the companies involved in the cartel will have to bear higher recruiting costs.
3) These recruiting costs make a mistake in hiring more costly. It gets harder to "test" employees and let them go when they are a bad fit, because expenditures from your HR budget are shifted to the front (on the promise of savings down the line).
4) Further, when the cartel breaks (as it will, each company has an incentive to cheat on the other members) the payoff of this inflated recruiting "investment" disappears.