How to say no to extra work without sounding difficult

Don't say no. Ask for the trade

A flat no sounds like refusal. A trade sounds like judgment. Name what has to move.

1. Opening

   I can take this on. I want to be clear about what it pushes.

2. Boundary

   If I start this week, the vendor report slips to the 20th.

3. Pause

   Which should come first?

Let them choose

Putting the priority decision back with your boss is not dodging. It is their job, and it protects yours.