[Blake_Emigro]

"Temp laborers could probably use some software to help with tracking hours etc. Typically all the hours are tracked with just the supervisor writing down on a carbon copy how long they worked and gives it to the laborers to take back to their office which is then manually input to the billing system to pay the laborers at the end of the day."

You're exactly right on this one and it exists in Vancouver, Canada: https://faberconnect.com/

"Keep in mind there's a much larger population of non-smartphone users that only use flipphones in construction especially day labor so any sort of app meant for the workers or laborers to use would just go unused."

Right on the first point, wrong on the second. The app is used by a different crowd - mostly younger, and many newcomer professionals or working holiday visa holders. This crowd doesn't need the daily pay to buy a 12-pack after work, and a cash advance in the morning to get smokes and a bus ticket.

I've used both types of service regularly over the last couple of years to fill in the gaps while I work on my startup.