No, they're not. Quite a few of them are in large companies, but they're also in very small workplaces. It's bargained in the sense that if they are large workplaces, they are either full time or they get more time to do this job as part of their normal work, but in smaller workplaces they get less time. Also, depending on how many women are in that workplace, they may have more time.
On February 7th, 2013. See this statement in context.