Serial killers are most likely to work in these 12 jobs.

It turns out even serial killers have crappy day jobs.

Yep, serial killers are clocking in and clocking off just like the rest of us.

In even creepier news they’re drawn to some very specific career paths.

In his new book, Murder in Plain English, criminologist and professor Michael Arntfield, has identified the 12 jobs that attract the most serial killers.

Arntfield based his results off a 2012 tabulation of serial killer jobs.

In his book Arntfield breaks down the jobs into four distinct categories: skilled occupations; semi-skilled occupations; unskilled occupations; and professional and government occupations.

In the skilled occupations category, serial killers are most likely to be an aircraft machinist/assembler or shoemaker/repair person or an automobile upholsterer.

Semi-skilled occupations with the most amount of serial killers include forestry worker/arborist, truck driver, and warehouse manager.

In the unskilled occupations category, serial killers are drawn to jobs as general labourers, hotel porters, and gas station attendants.

Professional and government occupations with most amount of serial killers include police/security officials, military personnel, and religious officials.

Arntfield told IFLScience serial killers are attracted to these jobs because they feed their desire to kill and give them access to victims.

“[It’s a] combination of mobility, power (whether structural or actual), and the fact many jobs also simultaneously satisfy the underlying paraphilias, or sexual preoccupations, that also fuel killers’ crimes,” said Arntfield.

The criminologist also told the publication that serial killers might do a combination of these jobs throughout their life.

The suspected Golden State Killer Joseph James DeAngelo, for instance, was once in the military, he was also a police officer, and at one stage he worked in a warehouse.

Arntfield says this kind of information will hopefully help investigators track down serial killers a lot faster in the future.

“The FBI already has a task force built around the understanding that highway travel for work is correlated with a great deal of interstate and multi-jurisdictional serial murder,” he said.

“In future, it will also assist with, ideally, better screening – especially for police and similar jobs that still allow too many to squeeze through.”