To be absolutely clear - I am NOT saying that it was unjust that the workers went on strike. I am saying that I think it was unjust that it came to that in the first place, considering Oxfam is a charity that campaigns against poverty. I know their efforts are at relieving poverty in other countries, but some of their paid staff were not earning enough to cover rent and were using food banks.
For added context, I myself volunteer in an Oxfam shop and our shop closed over a couple of days last December when the managers (who are the paid employees in our shop) were on strike.