This is a very recent change. I think it's a really good start to ensure that interns have the same rights in terms of workplace safety. But what we'd like to further see from the Ontario government is that they're actually proactively looking into instances of unpaid internships just because they are pretty prevalent in Ontario. Currently, the government relies on a complaints-based system, which means that interns who aren't aware of the laws around unpaid internships aren't able to ensure that their rights are safeguarded.
On March 27th, 2014. See this statement in context.