The Westin hotel at left rises above downtown buildings in Atlanta, Wednesday, Sept. 28, 2016. An exit button inside the Westin hotel where a worker was found dead failed to work during an inspection, trapping multiple people who had to beat on the door to alert someone to let them out, a medical examiner found. The Fulton County Medical Examiner's Office has amended its autopsy for Carolyn Mangham to include the new details about the freezer exit button at the Westin Peachtree Plaza. (AP Photo/David Goldman)
The Westin hotel at left rises above downtown buildings in Atlanta, Wednesday, Sept. 28, 2016. An exit button inside the Westin hotel where a worker was found dead failed to work during an inspection, trapping multiple people who had to beat on the door to alert someone to let them out, a medical examiner found. The Fulton County Medical Examiner's Office has amended its autopsy for Carolyn Mangham to include the new details about the freezer exit button at the Westin Peachtree Plaza. (AP Photo/David Goldman) Credit: David Goldman

Federal regulators and hotel employees are calling for new safety measures after a worker was found dead inside a walk-in freezer at the Westin Peachtree Plaza in downtown Atlanta.

Investigators believe Carolyn Mangham spent about 13 hours at temperatures below minus 10 Fahrenheit. Her frozen body was found after her husband called the hotel to report her missing.

Devices should be placed inside the large freezers so that anyone trapped or injured inside could send an alarm directly to hotel security or emergency services, union leaders say.

Hotel employees also want to carry โ€œpanic buttonsโ€ to alert others to emergencies.

โ€œAt the end of the day everyone deserves to go home to their families,โ€ said Wanda Brown, who worked with Mangham at the hotel and is president of the Atlanta chapter of the UNITE HERE union.

โ€œWeโ€™ve given our demands to the hotel and we are waiting for a response, but we will not stop asking for these things to be done,โ€ Brown said.

The U.S. Occupational Safety and Health Administration is proposing about $12,500 in penalties for a serious safety violation in the death of Mangham, 61.

OSHAโ€™s recommendations apply only to the Westin Peachtree Plaza hotel, and not to the larger Westin company or its parent firm, Starwood Hotels and Resorts Worldwide, which was acquired last week by Marriott International for $13 billion, creating the worldโ€™s largest hotel company.