They are using subcontractors for at least some of these positions. But I don't know whether for all, hence my suggestion to ensure they outsource all the lowly paid position, if they wanted to hit this arbitrary metric.
It's all a bit tongue in cheek and silly.
It does have some real world consequences because of some regulation that requires companies to publish some information about the ratio between CEO pay to lowest paid employee.
But as we noted here, who is officially an employee and who ain't is flexible.
Uber and eBay and Amazon are an even more extreme example: Uber drivers and eBay sellers are at the heart of what makes those companies tick. But they are not employees.