I think this is brilliant, as I have breastfed both my children after returning to work when they were 5 months (for economic reasons - my husband looks after the kids at home). I was fortunate enough to work at a place that provides a private 'quiet room' where I could go to express during my breaks and lunch hour (also prompted some good discussions on breastfeeding with colleagues). This eased my transition back to work (I didn't have to scale down daytime feeds before returning to prevent engorgement), and my LOs got expressed milk during the day - 2 ten-minute expresses with a hand pump gave me enough milk to cover the next day at home (supplemented by frozen cubes if necessary). It was discreet & easy - I just kept the pump & bottle in my lunchbag in the fridge, and ate lunch while expressing.
I think all women who want to should be given this opportunity - the World Health Organisation encourages breastfeeding for the first 2 years, but currently very few mums continue past the first 6 months.