A 27-year-old German woman who fell 13 floors to her death on a Perth construction site on Monday had taken her safety harness off only moments before.

Gerry Hanssen, managing director of contractor Hanssen, said Marianka Heumann was ready to end her shift putting silicone in a lift shaft and had taken her safety harness off. “She must have been ready to knock off but doubled back to fix a mistake,” he told ABC radio. “She took…