Why is Hong Kong’s heat-stress warning system for outdoor workers in the hot seat?

Hong Kong residents have borne the brunt of extreme weather this summer, with July rainfall exceeding the monthly norm by 23 per cent, followed by hot spells in August linked to Tropical Cyclone Dolphin’s influence.
As of Thursday, the maximum temperature recorded at the Hong Kong Observatory reached 33 degrees Celsius (91 Fahrenheit) or above for nine consecutive days, marking the longest streak of very hot days for the month of August.
A green group warned in July that scorching days and hot...