Denmark's most dangerous workplace is keeping police busy.

Arbejdstilsynet, the working environment service, has reported 38 cases of life-threatening working conditions at a Metro construction site since 2012, four times more than the usual police workload during a large-scale public building project.

Jens Rise Rasmussen, a supervisor at Arbejdstilsynet, told Fagbladet 3F that the inspectorate only files criminal cases when dealing with serious violations of the working environment regulations.

"We have found a wide range of serious working environment issues at metro construction sites," he said.

READ MORE: Metro is Denmark's most dangerous workplace

Improving safety
Most of the cases were filed against the main Italian contractor Copenhagen Metro Team and the public owner Metroselskabet, that both commented that they were taking safety seriously.

Peder Mandrup Knudsen, head of HR at Metroselskabet, told Fagbladet 3F that the company is working to improve safety.

"We still get too many enforcement notices at the building sites and that's why Metroselskabet every day aims to improve working conditions in collaboration with our contractors," he said.