If the company is one of the better ones they should in theory already have drivers who appreciate what they have and do everything they can, go the extra mile as it were, to make it all work so the job lasts for ever.
Sensible existing employees will only recommend those who they trust and who will be good for the company, competence attitude etc, only a half wit would recommend another HW.
Like thousands of others over the years i’ve recommended and had good people taken on, those i worked with for years on end, no money for it and i wouldn’t really want it to be honest, but times and people have changed, it would cost the company time and money otherwise to recruit so makes sense for the most critical of recruiters, lorry drivers judging other lorry drivers, to do the initial wheat/chaff sorting for them, usually cost effective for the company.