SAFPU have requested the contract of Ndlovu from both the PSL and Maritzburg, after it was alleged that the player is earning less than R7000 per month on his current deal.
Reports surfaced a few weeks ago that the Union had been preparing to take United to task over the allegations, siting undercompensation.
However, the battle has since gone to the League, who still need to approve a minimum wage for the all players in both the National First Division and Absa Premiership.
SAPFU Deputy General Secretary Nhlanhla Shabalala is confident that they have a watertight case against the Team of Choice, and are ready to take the matter to the highest legal authority to ensure justice for all players earning below the pertinent threshold.
"The situation with Ndlovu is very sad. He is not the only a player in this situation, many players are dying in silence because of fear of victimisation," Shabalala tells KickOff.com.
"We will pursue Ndlovu's matter and make sure Maritzburg United meet the obligation to pay the player a proper salary and allow him to look after himself and his family."
However, Maritzburg boss Farouk Kadodia has also reponded to the allegations and termed the reports of Ndlovu's salary "irresponsible".
"That is totally irresponsible. All the players brought into the team earn more than that," Kadodia tells this website.