Apple, HP, and Dell are all major partners with Foxconn and have all recently said that they would be investigating conditions there. We asked each company what specifically they planned to do. Here is the response from an HP spokesperson:

HP is a recognized leader in supply chain social and environmental responsibility, and has high standards in place with our suppliers to ensure workers are treated with dignity and respect and operate in safe work environments. As with all concerns that are raised about our suppliers, HP is investigating the Foxconn practices that may be associated with these tragic events.