The 5 easiest ways to instantly ruin a job interview

Confused, concernedEvil Erin/flickrDon’t lie!

As a kid, lying could cost you dessert or TV time. As an adult, it can cost you a relationship or a job.

In a new survey from CareerBuilder, conducted online by Harris Poll on behalf of the jobs site, more than 2,500 hiring managers and employers shared the five things they consider “instant deal breakers” in an interview. Not surprisingly, lying ranked No. 1.

Sometimes when we’re nervous, desperate, or feel insecure, we lie to protect ourselves or improve the way others perceive us. But it’s important to fight the instinct — especially in a job interview.

Peter Harris, editor-in-chief of online job board Workopolis, previously told Business Insider “you certainly shouldn’t lie about abilities that you don’t really have. There’s no point in being hired for a job that you can’t actually do.

“You also shouldn’t lie about working somewhere you haven’t or obtaining educational credentials you haven’t actually earned,” he adds. “These are easily confirmed in background checks and tend to come out in the end.”

Here are the other common ways job candidates ruin job interviews:

1. Lying

About two-thirds (69%) of hiring managers said fibbing is an instant deal-breaker.

If they catch you in a lie, they will assume you're a dishonest person. Who wants to hire someone you can't trust?

2. Answering a cell phone or text during the interview

About 68% said this would prevent them from offering someone a job.

It's incredibly rude and unprofessional -- and unless it's an emergency, picking up your phone during the interview tells the hiring manager you're easily distracted and not 100% focused or engaged in the conversation. It may also tell them you don't really want to be there.

3. Appearing arrogant or entitled

About 60% of people cited arrogance as a deal-breaker.

If the interviewer gets the sense that you're a pompous narcissist, they will understandably have reservations about bringing you on as an employee and subjecting other employees to your selfish behaviour.

4. Dressing inappropriately

A whopping 50% said inappropriate clothing would make them not want to offer a candidate the job.

'What you choose to wear communicates a lot about who you are and how you see yourself,' writes former Business Insider reporter Vivian Giang.

It's important to dress for the job you want and to always maintain a professional look -- especially during a job interview.

5. Swearing

Half (50%) said they wouldn't hire someone who swears during the interview.

Career expert and author of 'The Humour Advantage' Michael Kerr previously told Business Insider: 'As obvious as this may be, don't use curse words or slang terms in an effort to come across as 'authentic.' You'll only give the impression that you have poor communication skills.'

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