Although it's unlikely to be word-for-word in the paperwork,
your employer's Workers Comp and Public Liability cover
will probably be affected.
In insurance-think, there's no difference between "Suspended", "Disqualified", and "Unlicenced"..
To the insurer, you've either got one, or you don't.
The employer's insurer could potentially refuse to pay a claim
if an at-fault employee driver didn't have a licence.
In any event, anywhere where you load, unload, stack or otherwise deal with,
say, containers, or trucks, could well be a "road related area"
within the meaning of the SA version of the Road Rules,
so you'd likely need a licence to drive anything there - even a small one-pallet sized forklift.