Not doing your research
Check the ‘About Us’ link on the company website and read their mission statement. Find out who the competition and major players in the market are.
Turning up late
Never turn up late and if you can not avoid it, then call ahead and make sure they know well in advance.
Smart casual might be the current trend, interviews should be considered more formal.
Give clear answers
Take time to think before you answer questions and avoid bumbling to an uncomfortable halt; it doesn’t inspire confidence. Also, don’t mumble; the interviewer doesn’t want to have to ask you to repeat an answer or have to strain to hear every word you’re saying
Speaking negatively about your current employer
Never complain about your current employer no matter how despotic or ineffectual they are. Badmouthing won’t reflect well on you.
Not asking questions
Employers want to see you’re interested enough to hear more about the post or company and will look kindly on any well placed questions.
Lying on your CV
Anything written on your CV could be discussed at an interview and a fabrication about your work or education record could damage your reputation in the long run.
Getting personal or too familiar
Avoid giving sob stories about how much you need the job due to the mountain of debt you’ve accrued. Also, don’t behave in a conceited or over familiar and flirty manner; it’s not a good look no matter how much you fancy your chances.
Not bringing along additional CVs
If you’re unsure how many people will be interviewing you, bring along surplus copies of your CV to hand out. It will show that you’re highly prepared.
Sitting down before invited
It’s common courtesy to wait until you’re shown a seat to sit down. Also, avoid slouching or putting your feet anywhere but firmly on the ground.
Discussing money or time off
Unless an offer is put on the table it’s not recommended that you discuss money or future working and holiday arrangements.
Using foul and inappropriate language is generally not acceptable at any time in the workplace, so at an interview it won’t win you any accolades.
Not following up
You might not think you’ve performed well in an interview but a simple email reiterating your interest is a courtesy that might just pay off in the long run.