[Pyrodogg]

Most employees starting at a new business have no idea what the internal processes are. That applies to programming frameworks just as much as the procedures for refilling the coffee maker.

That basic learning is takes place in the first days/weeks of anyone's new job. There is no basis that the employer should not pay him just for not knowing how to 'hit the ground running'.

He would be much better off taking the time to look for other opportunities.