You disagree
How to disagree with your manager
“I see a risk in doing it this way, and I’d like to explain it once. If you still decide to go ahead, I’ll get behind it.”
Say it once, privately, and commit either way. Naming the risk shows judgement, and offering to get behind the decision shows you are on the same side.
What is happening
Your manager has decided something and you think it is wrong. Saying nothing feels safe, and pushing hard feels like a challenge to their authority. Say it once, clearly and privately, and then commit to whatever they decide.
Keep the risk to one sentence when you explain it, and raise it before the work starts rather than after something slips.
If they push back
Your manager may have made up their mind already. They might say:
“I’ve already decided.”
Leave it there, and show that you meant the second half of the line:
“Understood. I’ve said my piece, and I’ll make it work.”
The part this page cannot settle
There are two other ways to say this, one softer and one firmer. Which one fits depends on how senior they are, how much is at stake, and whether you have raised it before. Choosing well is most of the work.
The Complete Lines has all three for this moment and for every other one, sorted by what is happening to you. If you have a meeting about it coming up, the first page helps you work out what to say before you walk in, and it is free.