Divisions are emerging over who should pay for the KiwiSaver employer's contribution, with some temporary workers reporting pressure to take it out of their salary or wages.
Employers cannot force either permanent or temporary staff to include the employer contribution in a total remuneration package but can do so by agreement with the employee.
Michael Littlewood, co-director of Auckland University's Retirement Policy and Research Centre, believes it's an approach all employers should take.
Littlewood said it did not make sense to have two people undertaking the exact same job getting different amounts from their employer because one was in KiwiSaver getting the 3 per cent employer contribution on top of their salary.
"You can't justify paying someone in exactly the same position more just because they want to save for their retirement," he said. "Two otherwise equal employees should get the same money regardless of whether they are saving for retirement."