15 Behaviours At Work That Make You Look Unprofessional

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If you’re serious about your career, you’ll want to put your best foot forward at work.

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That means acting professionally and in a way that makes you seem reliable, trustworthy, and capable. Unfortunately, if you do these things regularly, you’re sending the opposite message. Don’t be surprised if you end up being passed up for promotions, left out of exciting projects, or even find yourself the first on the chopping block when the company needs to downsize.

1. Constantly showing up late

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Arriving late here and there happens, but when it’s a regular habit, it sends a message that your time is more valuable than everyone else’s. Even if you don’t mean it that way, tardiness can make you look unreliable or disorganised. Being on time shows respect for other people and the work itself. It’s a small thing that says a lot about your commitment. A bit of punctuality goes a long way in setting a good impression.

2. Ignoring feedback

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Feedback is a part of growing professionally, and ignoring it can make you seem resistant to improvement. Being open to input, even when it’s critical, shows you’re willing to learn. Embracing feedback, rather than brushing it off, makes a positive impression on managers and peers. It’s an attitude that shows you’re in it to improve. Growth starts with listening and adapting.

3. Dressing too casually

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Work attire has got more relaxed, but there’s still a line. Showing up in overly casual clothes can make you look like you’re not taking the job seriously. Dressing appropriately shows you respect the workplace and its culture, even if it’s just a bit of effort on the outside. It’s not about wearing a suit; it’s about looking put-together. Your appearance is often the first impression people get, so it counts.

4. Using too much informal language

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It’s great to feel comfortable, but using overly informal language can make you seem unprofessional. Overly casual words or phrases can give the impression that you’re not serious about your work. There’s a balance between friendly and professional, and keeping that in check makes a difference. Being a bit mindful of your language keeps things respectful. The way you communicate shapes how other people see you.

5. Taking personal calls at your desk

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Sometimes you need to handle personal matters, but loud or frequent calls at your desk can disrupt everyone around you. Colleagues are likely focused, and your conversations can break their concentration. Moving to a private area for calls shows consideration for the team’s work environment. It’s a small gesture that respects everyone’s need for quiet. Being mindful here shows you’re aware of your impact on other people.

6. Being overly negative

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Every job has its frustrations, but constantly focusing on the negatives can bring the whole team down. A negative outlook affects not just your morale but the energy of those around you. People want to work with someone who can handle challenges without dwelling on them. Staying positive, or at least neutral, keeps the work environment healthier. A positive approach makes you someone other people want to be around.

7. Missing deadlines consistently

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Missing the occasional deadline is understandable, but when it’s a habit, it reflects poorly on your reliability. Other people are counting on your work, and when it’s late, it affects their timelines too. Managing your time well shows you’re committed to doing a good job. Deadlines are part of the trust people place in you. Meeting them shows you’re dependable and respectful of the team’s time.

8. Gossiping about colleagues

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Office gossip might be tempting, but it rarely makes a good impression. Talking behind people’s backs can make you seem untrustworthy and even create tension in the team. Keeping things professional with co-workers builds respect and keeps the focus on work. People notice when someone isn’t stirring up drama. Avoiding gossip makes you someone people know they can trust.

9. Taking credit for work you didn’t do

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Claiming or implying credit for something you didn’t do is a quick way to lose trust. It’s often clear who did what, and taking credit for someone else’s efforts won’t go unnoticed. Teamwork is about recognising everyone’s contributions, not just your own. Giving credit where it’s due builds respect and shows you’re fair. It’s a solid way to earn everyone’s confidence and support.

10. Overloading your workspace with personal items

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It’s nice to make your space feel comfortable, but filling it with personal items can give the impression that you’re not fully focused on work. A few decorations are fine, but too much can be distracting for other people or even yourself. A balanced workspace keeps things professional without losing your personality. It’s about showing you’re there for work, not just to hang out. A tidy space reflects a clear mind.

11. Interrupting during meetings

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Sharing ideas is great, but interrupting people in meetings can make you seem impatient or dismissive. Letting other people finish their thoughts shows respect and patience, qualities people appreciate in a team setting. When everyone feels heard, collaboration works better, and ideas flow naturally. Being a good listener makes meetings smoother and more productive. It’s a simple way to show respect for everyone’s input.

12. Not taking responsibility for mistakes

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Everyone makes mistakes, but dodging responsibility when they happen doesn’t sit well with colleagues. Owning up to errors shows integrity and a willingness to learn. People respect those who can admit when they’re wrong and work to improve. Blaming everyone else or making excuses only eats away at trust. Being accountable builds a reputation for honesty and reliability.

13. Constantly watching the clock

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It’s normal to glance at the clock now and then, but if you’re always counting down the minutes, it’s noticeable. It can give the impression that you’re just there to collect a pay cheque, not because you’re invested in the work. Staying focused and engaged shows a commitment to the job, not just the hours. A bit of enthusiasm goes a long way in showing you care. It’s about being present and involved.

14. Showing up unprepared

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Whether it’s for a meeting or a project, coming in unprepared can make you seem uninvested. Preparation shows that you value everyone’s time and are ready to contribute. When you’re prepared, discussions are smoother, and decisions get made faster. It reflects well on your commitment to the team and the job. A little effort here makes you look reliable and focused.