1-on-1 training is a waste of time if the information shifts. If this is their line of resistance then it's easily addressed. You install a Wiki in Moodle and get the current staff to write down their job tasks into it. Then, new hires can see what the procedures are. Once they've had a look through the system they could be given some simple tests to check understanding and then, any issues that arise would be solved by a subsequent meeting. This has two advantages (a) it makes the company actually write down their procedures, (b) most procedures are fairly standard and so only the tricky, specifc ones would need further talking. It saves time and money - your selling point for the company.
The only issue I can see is that if you are going to set this up you'll need to get the company to consider some form of knowledge management strategy which is another whole can of worms!