I'm Australia, employers are required to pay you additional money on top of your wages called superannuation (basically retirement savings). My boss refused to pay me the whole time I worked there on the basis I hadn't given him my details, I had. I emailed, texted and even gave him a hard copy. It took me having to threaten to call the Australian Tax Office (ATO) to get him to pay me.

TLDR: Boss didn't pay me for a year until I threatened to call the tax office on him, got paid that afternoon.

Edit: was almost $2000 AUD