Originally Posted by
Rock_Flock_of_Five
The article is probably a bit sensationalist. On most major construction jobs these days, they carry out random drug and alcohol testing on the workforce. With up to 4,000 workers during its peak development, it's inevitable that some will get red-flagged. I'm sure that the figures would be similar if you carried out the same testing on a large factory.
I worked on Heathrow T5 back in 2003-2005. It was the largest construction project in Europe at the time. Much of the workforce were from all over the UK, staying in temporary digs. Despite working quite long hours, boredom in the evenings was always a problem.