I don't remember the exact study, sorry. I did a search and found this, though, which looks close: http://www.danzpage.com/Construction-Management-Resources/Cal

I don't remember the exact study, sorry. I did a search and found this, though, which looks close: http://www.danzpage.com/Construction-Management-Resources/Calculating_Loss_of_Productivity_Due_to_OT_Using_Charts_-_Nov_2001.pdf http://www.danzpage.com/Construction-Management-Resources/Ca...