CHARLOTTE, N.C. -- Investigators are still interviewing witnesses at the scene of a deadly construction accident that claimed the life of worker Wednesday in uptown.

• Mata-Hernandez died on a construction site Wednesday
• In 2017, there were 16 work-related construction deaths in the state
• RELATED: Person dies after falling from Charlotte building

The National Safety Council reports on average, two workers die each day across the country as a result of a workplace fall.

According to the Charlotte Mecklenburg Police Department, 24-year-old Mata-Hernandez was in a construction elevator on the 19^th floor before falling out at the site of the old Charlotte Observer building.

A Department of Labor spokesperson says investigators are looking at a number of things including safety records, was the right fall-protection gear being used and were employees properly trained at this site which is a 33-floor mixed use space set to open next year.

Safety guidelines require construction employees working above six feet to wear a harnesses or other fall protection gear. It's still unclear, if the construction worker was wearing something.

The Department of Labor also says if any fault is found, it lies with the affected employee's employer. Since sites like this often have many subcontractors, their investigation could take some time.

Across the state in 2017, there were 16 work-related construction industry deaths, three less than in 2016. Falls are considered the leading cause of death in construction accidents.