I have no idea whether or not any local law or regulation was being breached.
If any relevant “Occupational Health and Safety” rules were notionally applicable, Lahore’s employers and employees were obviously well aware that such rules were notional, only.
One would never see a working person carry such an enormous load – in full public view – on any Australian street.
Some things that Australians regard as “not to be tolerated in this, the 21st century” are, in many other nations, “utterly unremarkable, perfectly normal”.
