disparity/dɪˈspærɪtɪ/
n.-ties不等；不同；不一致disparity in age年龄不同
There is great disparity between the amount of work that I do and what I get paid for it.我所做的工作和我所得到的报酬很不相称。
People came to realize that there was (a) great disparity between the amount of work that they did and what they got paid for it.人们开始认识到他们所做的工作和他们所得到的报酬很不相称。