I work in a team of 6 people. Our manager has been off sick for 1 month and is likely to be off for at least 2 more months, if not longer. I am seen as the most senior/experienced team member so I have been asked to take on the management role for as long as is required. Should I ask for a payrise or a temporary increase in my pay to cover the additional responsibilities? If so, how would you advise that I go about doing this without sounding like I am trying to profiteer from my mangers illness? For reference, I work for a large national private sector company that is renowned for being stingy with pay rises.