Unfair treatment by DIPLOMAT LUGGAGE TO IT WORKERS

My friend has been with diplomat luggage for the past 5/6 years now, the company doesn’t know how to treat its workers, as we are experiencing pandemic of corona, he was never assisted financially ,no communication from the owners ,when he writes to them ,they ignore him, as he is struggling financially , they never offered him a contract but he has been working for them as a casual and no casual contract was provided by the company which is against the law, he was over looked on two occasions ,they decided to hire people from outside, when he spoke with his manager at first and he was told not to worry, he will get back to him once he speaks to the owner about him becoming permanent but he was never spoken to but someone else was hired and nothing was said to him ,that is the first incident, second incident was when they were supposed to send this person to Nelspruit and never did ,they hired him and over looked my friend again ,still nothing was said to him but he kept working hard hoping he would get the Permanent position, he worked as a casual without a contract for 5/6 years cause every time they promised him something,they never delivered and kept empty promises, at one stage he was willing to even accept a offer which the manager spoke to him about him moving down Nelspruit ,still nothing was done but over looked him again and corona came ,no communication or assistance from the company has been done ,he is a loyal hard working young man and he always goes an extra mile for the company but during times like this , he is treated like trash and he was never part of the company. He was never registered for UIF ,has the owner calms that ,he didn’t know which documents he uses.

Can the labour department get involved in this matter and deal with the company seriously,