I started a new role 6 weeks ago in a large company, my manager has today requested that I take responsibility for delivering completed pay forms for temporary staff from our department to the finance department in a different building and recording that delivery on a spreadsheet. There is nobody to sign off on receiving them, they are to be placed in a locked box at the entrance to the building. I am concerned that if something goes wrong and somebody doesn't get paid, the finance department will say they never received it and it would come back on me. Would i be unreasonable to tell my boss i am uncomfortable with this level of responsibility and ask that I not do it. How should I word this request?