According to Makoe, SANParks was offering 6%, plus 1% from June 1 and another 1% as of October 1. It was also not willing to grant the members the standardised 8%, which unions came down to.
"We believe that this offer is totally unfair, following the hours, Sundays and public holidays that our members have to work," said Makoe.
SANParks confirmed the strike, saying contingency plans had been put in place to avoid disruptions for guests.
"Guests are requested to note that the one-day protest action will be focused at the Paul Kruger Gate, where management will receive a memorandum of grievances from organised labour," it said in a statement.
"All other entrance gates to the Kruger National Park and other parks will be operational as normal. It is for this reason that guests are advised not to cancel any bookings as a consequence of a one-day planned protest action announced by the two unions."