You may be given 20 minutes or even more to prove yourself in a job interview, but one mistake could ruin everything in seconds. In South Africa’s job market, where thousands of people are unemployed, many roles attract hundreds of applicants. If you reach the interview stage, you’re already ahead. But that doesn’t guarantee anything yet.
Too often, good candidates lose out because of little mistakes. Employers hiring for jobs across industries say they often see the same problems. These errors may seem insignificant, but they send the message that applicants are either not serious or professional. This piece examines 30 of the most common ones, so you know how to better avoid them.
Most mistakes come from interview preparation. It is one of the biggest reasons people fail. Here are some common mistakes to watch out for:
1. Not researching the company
Too often, people walk into interviews without knowing much about the employer. You should research the company's activities before attending the interview. This helps you answer questions more effectively, and demonstrate genuine interest.
2. Arriving late or without enough time
Punctuality is crucial. Arriving late creates a bad first impression and shows a lack of respect for the interviewer’s time. Even if it’s a virtual interview, make sure to arrive early, reasonably 5 minutes before the set time.
3. Failing to practise common interview questions
Most interviewers often ask similar questions like “Tell me about yourself”. Regrettably, some applicants go to the interview unprepared for the type of questions typically asked for the role. This is one mistake to avoid because practising helps you speak clearly and confidently.
4. Ignoring the job description
You may ask. Why should I care about the job description? As irrelevant as it may seem, the job description tells you exactly what the employer wants. Knowing it in and out will help you cite relevant experiences and skills that position you as the best match. That is why smart candidates use MyJobMag CV Matcher.
5. Not preparing questions to ask
This is one of the common mistakes job seekers make. At the end of the interview, you will usually be asked if you have any questions. The majority will likely say no without knowing that it can make them look uninterested.
View 24 Questions to Ask in an Interview
First impressions matter a lot. How you present yourself can set the tone for the whole interview. These are some first impression mistakes to avoid:
6. Dressing inappropriately
Different jobs require different dress codes. For most interviews, it’s best to dress smartly and professionally. Avoid casual clothes like jeans or sneakers unless the company culture clearly allows it.
7. Looking Unkempt
Clean hair, neat nails, and fresh breath are simple but important. They show duty of care which will likely extend to work.
8. Not smiling or making eye contact
While we understand that it’s an interview and you need to be serious, don’t be too hard, where you look unapproachable. A friendly smile and good eye contact goes a long way.
9. Bad body language
Bad body language, like fidgeting, can disqualify you. Sit up straight, and avoid crossing your arms.
10. Arriving unprepared with your documents
Very few applicants go to an interview with documents. Don’t be like them even if it’s a virtual interview. Always bring extra copies of your CV, a pen and note for jotting important points, as well as any other required paperwork.
How you speak and listen during an interview is just as important as what you say. These are the common communication errors to avoid:
11. Speaking negatively about past employers
This is important. No matter how bad your previous job was, avoid complaining or blaming others. This makes you seem unprofessional and difficult to work with.
12. Talking too much or too little
It’s important to strike a balance when communicating. Try as much as possible to avoid rambling or yapping, especially if you are Gen Z and your interviewer is from an older generation. Keep your points clear and to the point.
13. Using filler words too often
Words like “um” and “like” can make you sound unsure. Tone it down or pause in between speeches.
14. Not listening properly
If you don’t listen carefully, you might misunderstand questions or miss important details. Make sure you pay full attention and ask for clarification if needed.
View Career Advice from Top HR Professionals
15. Using Slangs
Some candidates are used to slangs or informal expressions and sometimes say them without knowing it. If you are one of them, do everything to keep it in check.
Your attitude during an interview can make or break your chances. Even if you have the right skills, poor behaviour can put employers off. Watch out for these common errors:
16. Being rude or disrespectful
Always be polite to everyone you meet, from the receptionist to the interviewer. Rudeness shows a lack of professionalism.
17. Appearing arrogant or overconfident
Confidence is good, but too much can seem arrogant. Be humble and honest about your skills and experience.
18. Showing a negative attitude
Avoid complaining or appearing unhappy. Employers want to hire positive people who can handle challenges.
19. Being distracted or uninterested
Looking at your phone, fidgeting, or not paying attention shows a lack of respect. Stay focused and engaged throughout the interview.
20. Failing to build rapport
Try to connect with the interviewer. A friendly smile, small talk, or finding common ground can help create a good relationship.
21. Not Using Sir or Ma
This is especially important for Gen Z or new generation candidates. If you are dealing with an employer or hiring manager from previous generations, endeavour to address them by using sir or ma. While it is not everyone who takes this really important, you don’t want to miss an opportunity because the interviewer felt you were addressing them as an equal. Courtesy goes a long way.
Answering questions well is key to a successful interview. Many candidates trip up here. Avoid the following common mistakes:
22. Giving unclear answers
Be specific and give examples when you can. Saying “I’m a hard worker” is less convincing than explaining how you showed hard work in a past job or project.
23. Not answering the question asked
Sometimes candidates talk about something else or avoid the real question. Listen carefully and answer what is actually asked.
24. Over-sharing personal information
Keep your answers professional. Avoid talking about personal problems or details that are not relevant.
25. Getting defensive or angry
If you feel challenged or don’t know the answer to a question posed by the interviewer, stay calm. Getting defensive can make a bad impression.
What you do after the interview can be just as important as what you do during it. Here are common mistakes to avoid after you leave the room:
26. Not sending a thank-you note
A simple thank-you message shows appreciation and keeps you fresh in the interviewer’s mind. Not sending one can make you seem uninterested.
27. Following up too soon or too often
It’s good to check in, but avoid pestering the employer. Wait a reasonable time before following up, usually about one to two weeks.
28. Ignoring instructions given by the interviewer
If the interviewer says they will contact you by a certain date, wait until then before reaching out. Not following their guidelines can look somehow.
29. Assuming you got the job without confirmation
Don’t stop looking until you get an official offer. This keeps you prepared in case things don’t go as planned.
View How to Get Your Dream Job in South Africa
30. Not reflecting on your performance
After each interview, think about what went well and what could improve. This helps you prepare better next time.
While nobody is above mistakes, learning to avoid common ones can greatly improve your chances of success. With good preparation and the right mindset, you will increase your chances of securing any job you want.
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