All the lions that escaped from the Kguger National Park on Sunday have been found and shot dead.
Hospersa is awaiting a strike certificate, after wage talks deadlocked.
This is the second time lions have escaped from the main tourist attraction site in the Mpumalanga province. It says park staff in a helicopter located the remaining lions and chose to kill them rather than dart and return them to the park as originally hoped.
"The industrial action will hamper the search as close to 3‚000 workers will down tools in coming days‚ with majority working in the Kruger National Park".
Mabasa says they sent out a search team this afternoon.
"In this case, the farmer had already killed one of the animals which changed the outcome of the situation entirely", she said.More news: De Zuidpool heeft er een enorme ijsberg bij
It is now believed only three male lions escaped rather than four.
A Mpumalanga Tourism and Parks Agency (MTPA) spokesperson, Kholofelo Nkambule, confirmed all four of the lions had been killed on Friday.
It is not yet clear how the lions escaped from the park, which is largely fenced off.
The latest escape comes after five lions broke out of the same park in May.
The Mpumalanga Tourism and Parks Agency had called on residents around the park to be vigilant and treat the animals as risky.