Does anyone ever talk to their clients anymore?  There are lots of us blind men here willing to help you describe an elephant, but the best source is probably the guy who got paid.  Looks like he works a lot of Sundays, does he get double time for Sunday overtime?  

It's OK to ask him, and charge him for the work required to prepare an accurate return.  That's why he's paying you.  Of course if he worked himself to death, his widow might not be as informed.