Would you be willing to purchase products from companies that treat their workers this poorly?

Wal-Mart has a reputation for treating its workers poorly. However, Amazon is a viable competitor of Wal-Mart, and in order to accomplish this the former company appears to be even exceeding the latter in how poorly it treats its employees.

The Amazon distribution center closest to me even keeps ambulances outside of the warehouse since so many workers either get hurt trying to keep up with demands or suffer from heat exhaustion while being overworked. Here is even more detail about how bad it is to work at an Amazon distribution center.

Would you be willing to purchase products from Amazon, or other companies, regardless of the savings and speedy delivery, if you knew what these companies do to their employees in order to accomplish this?