The data for: https://twitter.com/#!/nicepaul/status/163797296306331648/ph...
as indicated at the bottom, comes from: http://onforb.es/wj2Lt6
which maps to: http://www.forbes.com/sites/timworstall/2012/01/29/the-apple...
If you look at Tim Worstall's (kinda op-ed) article on the second page, you can see that the author says that if the fatalities rate in Foxconn was the same as that in the US, we would expect to have 35 fatalities / year. Then he says that we only heard about 3-4 workers hurt at Foxconn, hence the rate is lower. That argument is flawed because what we hear on the news cannot be construed to represent all fatalities at Foxconn. I suspect that the fatalities rate at Foxconn is not publicized (because it doesn't have to be).
Another issue is that to determine the relative safety of the workplaces, the author is only looking at workplace fatalities. What about looking at accidents that leave the workers unable to work or maimed?
Bottom line, I don't think the incomplete data that we have supports the assertion that Foxconn is a safer workplace.