A.T. Robertson Commentary Matthew 20:6

"And about the eleventh [hour] he went out, and found others standing; and he saith unto them, Why stand ye here all the day idle?" — Matthew 20:6 (ASV)

All the day idle (ολην την ημεραν αργο). Extent of time (accusative) again. Αργο is α privative and εργον, work, no work. The problem of the unemployed.