Morally, you should, but, in reality, some firms (generally the larger ones) think that their IP's are above such things !! At the end of the day he / she is the legally appointed supervisor and the buck stops with them. However, there is little you can do when push comes to shove
My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014 http://foggy.blogs.iva.co.uk