Generally speaking it is hard to photograph people who are working. This is particularly true of people in low-paying jobs where they tend to be less empowered.
Most construction workers I’ve approached to photograph have said no. There have been a couple of exceptions but so far only one was willing to chat.
Most of these guys work under the scrutiny of a nearby boss who himself is worried about any images that may reach the higher ups.
It would be great to get more stories from these men and I will keep trying. But in case they seem under-represented, this is the challenge.