Even though almost half of jobseekers research employers via their devices.
Nokia is currently encouraging augmented reality job-hunting but data from Monster.co.uk suggests that may be a distant dream, as just 39 per cent of UK businesses have wrapped their heads around the importance of mobile sites.
The lack of optimisation is greatly contrasted by the third of jobseekers using mobiles to search for jobs and the 48 per cent researching companies.
Additionally, 19 per cent say they think badly of a firm that doesn't support their connected devices, which could mean businesses missing out on star employees.
However, companies are showing a massive fondness for social media, with 76 per cent saying they interact with applicants through Facebook and Twitter.
It makes up for the mobile neglect somewhat, with 15 per cent thinking positively about social businesses.
If this sounds like your firm, check out this infographic on the importance of mobile web optimisation.
Sinead Bunting, marketing director at Monster.co.uk, said: "In our increasingly connected world, job seekers expect to engage with employers through multiple channels, platforms and devices, rather than simply relying on a one-dimensional job advert or career site.
"Employers need to ensure their approach to recruitment matches their consumer marketing. This means making the application process and jobs information available across a range of devices - including mobiles, smartphones, desktops and tablets – otherwise they’ll find a new generation of job applicants will slip through the recruitment net."