According to employers, there are consistent red flags that could cost you your dream job no matter your age, industry or background.

While it might seem a given that you should turn up on time and invest in professionally on-cue ensemble, it turns out these are the things that some interviewees are getting horribly wrong.

A new Reddit thread which asks, “Employers: What are some red flags when it comes to a potential hire?” reveals a horde of serious blunders that will surely see you given the boot.

Failing to research the company, dressing too casually, being critical of current or past employers and arriving late are all likely to damage your chances according to the bosses.

One user said, “'If someone shows up late for an interview with no excuse and no effort made to let me know they were running behind I tell them I am no longer interested in interviewing them.”

While another described one candidate who was 'dressed like she just came out of a crack den' and proceeded to use her phone during the interview, complaining that it was taking far too long. Unsurprisingly, she 'raised pretty much every red flag'.

Aside from being punctual, employers also dislike it when job-seekers talk too much or bring up their personal lives.

One boss wrote, “'Ain't even all the way through the door and you can't separate this place from your personal life? No chance.'

While another added, “Acting like you're a perfect person who never has problems with anything. If I ask you how you would solve a problem and you tell me that you've never had an issue with that and never will, I'm going to think you're a bulls**t liar.”

Some job-seekers don’t even make it to the interview stage though with bosses revealing critical CV bugbears.

“I put ads on all the main job posting sites and the last line said, “Please attach your resume and cover letter as a PDF," said one user.

“I got hundreds of applications.Wanna know how many people included both a resume and cover letter as a PDF? About 20.