I was thinking of a milk dipper as well but that would introduce yet another profession of dairy farming along with the hay rake (cereal), Hoe (Ground work), Sacks (Gathering of things to bag up), etc
I also noticed something about the clothing. See the guy on the far right with the spade? He's wearing plus fours ! Which would suggest a country gentleman of some education rather than an uneducated farm hand, yet he's wearing overalls over the top

Plus fours would suggest 1920's and his posture suggests an ex military man.
Also the guy to his right appears to be wearing a cape ! Again, a cape for an uneducated farm hand? And his head gear is really unusual. My first instinct is that he's a vet. He also has some kind of strange arrangement below his chin in the chest area that I can't make out. Maybe the hat is a medical scrub hat and the arrangement at his chest area is a mask he has just untied and is hanging in the chest area
Also I'm starting to lean back toward female for the person in the front middle as I have only just noticed that he/she is wearing a bib apron as the braces over the shoulders are quite clear
So a wheat/cereal farm that does ground work collecting stuff in large sacks and uses buckets and is run by educated types who don't mind spade work !
Weird