I posed this question in a blog post last week. That post was about how IT outsourcing providers allegedly encourage customers to do unnecessary work.
I put a survey in the blog post to see how common this practice is. I have had 10 respondents so far. Eight of them said outsourcers have suggested they do work when it is not required ant two said it has not happened to them.
Ten is a tiny sample and the results do not mean anything yet. I am posting about this now to try and get more people to answer the question, which can be found in this blog post.