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 Apple spokesperson:

We are saddened and upset by the recent suicides at Foxconn.  Apple is deeply committed to ensuring that conditions throughout our supply chain are safe and workers are treated with respect and dignity.  We are in diret contact with Foxconn’s senior management and we believe they are taking this matter very seriously.  A team from Apple is independently evaluating the steps they are taking to address these tragic events and we will continue our ongoing inspections of the facilities where our products are made.