You dont say No. You say Yes I can but first need to be finished this and that. Then say: If you feel your task has priority let me talk to my supervisor 1st.

You dont say No. You say Yes I can but first need to be finished this and that. Then say: If you feel your task has priority let me talk to my supervisor 1st. You will be yes man, expert and your boss will know u r busy. Noone will feel bad about your attitude. Try it. Martin