You've agreed to “a quick review”. It turns into rewriting somebody's presentation. You look at the clock. It's 6.20pm. The owner of the slides has already gone home.
You didn't mean to volunteer for this, but at no point did you quite manage to say no.
Setting boundaries at work doesn't mean refusing every inconvenient request. It means being clear about your capacity, responsibilities, availability and how you expect to be treated. Sometimes that is awkward. Usually it is less awkward than another month of quietly resenting everyone.
When you're being given too much work
1. You're already at capacity
“I'm at capacity with the client pack and the board report. Which should I move if this takes priority?”
Ask for a decision about trade-offs instead of promising three impossible deadlines.
2. Someone asks for “just one small favour”
Try: “I can give this twenty minutes today, but I can't take ownership of the full piece.” State the limit before doing the favour, not afterwards.
3. A project keeps growing
Try: “This is a larger scope than we agreed. Can we revisit the deadline and who is doing what?” It's not a refusal to help. It's a request to recognise reality.
4. An unrealistic deadline lands in your inbox
Try: “I can send a first pass by tomorrow, or a checked version by Thursday. Which would be more useful?”
5. You're asked to do someone else's recurring job
Try: “I'm happy to cover this week, but we need a permanent owner for the process.” If you're repeatedly stepping in, ask your manager to clarify responsibility.
When work begins taking over your time
6. Your manager messages late at night
“I've picked this up this morning. For messages outside working hours, shall I assume they're for the next day unless we're covering an agreed urgent issue?”
Check your role and any on-call arrangement first.
7. A colleague expects instant Teams replies
Try: “I'm working in focused blocks today. If something is genuinely urgent, please call; otherwise I'll check messages after lunch.”
8. A meeting appears over your lunch break
Try: “I can't make that slot. I can do 2pm, or send my update in advance.” You can suggest another route without explaining your personal plans.
9. You're asked to work during approved leave
Try: “I'm on approved leave then. I'll make sure the handover is complete before I go, and [role or team] will have the project information.” Don't nominate a colleague without checking with them.
10. A request arrives as you're about to leave
Try: “I can start this first thing tomorrow. Is there a reason it needs to be done tonight?” An actual emergency deserves a different response from somebody else's poor planning.
When other people take up too much space
11. Somebody keeps interrupting you
Try: “I'd like to finish my point, then I'll come to yours.” Say it once, at normal volume. No speech required.
12. A coworker presses for personal information
Try: “I'd rather keep that private, thanks.” You can change the subject. You don't owe an explanation disguised as a joke.
13. You are pulled into workplace gossip
Try: “I don't know enough about that to comment.” You don't have to choose a side just because someone has approached you at the printer.
14. Somebody speaks disrespectfully to you
“I'm happy to discuss the problem, but not while I'm being spoken to like that. Can we continue when we can do it constructively?”
Only use direct confrontation where it's safe and appropriate. Persistent intimidation may need support.
15. A meeting is going nowhere
Try: “I need to leave at the agreed end time. Can we confirm the decision or arrange a short follow-up?”
When the boundary is about accountability
16. A colleague wants you to sign off work you haven't checked
Try: “I can't approve it until I've reviewed the figures. I can do that tomorrow morning.” The purpose of sign-off is to mean something.
17. You're asked to make a decision beyond your authority
Try: “I can recommend an option, but that decision needs the budget owner's approval.”
18. Your manager keeps changing the priority
Try: “Can we agree the order in writing? I want to make sure I'm concentrating on the right thing.”
19. Someone tries to give you credit you don't deserve
Try: “Thanks, although Maya built the analysis. I helped with the client presentation.” Fair boundaries work in both directions.
20. You've already said no, and the request keeps coming back
“I understand it's important, but my capacity hasn't changed. If this needs to happen, we need to reassign one of my current commitments.”
Repeating a clear answer is better than inventing a new excuse every time.
Three email versions that don't sound defensive
When you need to decline extra work
“Thanks for thinking of me. I'm committed to the client delivery this week and don't have capacity to take on another piece properly. If the deadline can move to Tuesday, I can help then.”
When you need a written decision
“Just confirming we agreed to prioritise the market analysis and move the internal deck to next week. I'll flag any change that affects the client deadline.”
When somebody's tone has become a problem
“I'd like to resolve the issue with the forecast. I'm available to discuss the figures, but I would appreciate keeping the conversation focused on the work and the changes needed.”
How to hold a boundary without feeling you need permission
The temptation is to overexplain. You start with “Sorry, I know this is really inconvenient”, add a long account of your calendar and finish by saying you'll do the work anyway if they absolutely need it. Your original point has disappeared.
Make the boundary specific, offer a workable alternative if there is one, then stop talking. People are allowed to be disappointed. You're still allowed to have a reasonable limit.
If your manager disagrees, you may need to negotiate based on your role and responsibilities. A boundary is not a magic override for legitimate instructions. It is an honest conversation about capacity, priorities and treatment.
What if someone ignores your boundaries?
Look at the pattern and the impact. Is it a misunderstanding about response times? A project with genuinely urgent requirements? A manager repeatedly refusing to discuss workloads? Write down the specific problem, agree expectations where possible and ask an appropriate manager or HR for support when needed.
If the conduct becomes threatening, humiliating or discriminatory, don't keep trying different phrases as though the problem is your communication technique. See our guide to workplace bullying and the Acas guidance on raising a problem at work.
A final line worth remembering
“I can do this, but not that, within the time we have.” It isn't glamorous. It may be the sentence that saves your Friday evening. If your problem is a manager who scrutinises everything, there's also a more specific guide to micromanaging bosses.