This relationship is the foundation for the argument, made by some trade unionists and labour advocates, that high wages can actually be "good for business". The precedent set by Henry Ford in 1914, who offered workers $5.00 per day (a very high wage at the time) so they could afford to buy the same cars they made, is often invoked.

Part 3, Chapter 13, Employment and Unemployment, p. 158 - Economics For Everyone (2008)