Matthew 20:2

And when he had agreed with the labourers for a penny a day,.... These labourers were of that sort that were called , "hired for a day"; concerning whom is the following rule (q):

"he that is hired…

A penny a day - The coin here referred to was a Roman coin, equal in value, at different periods, to 15 cents or 17 cents (7 1/2 d. to 8 1/2 d.) (circa 1880’s). The original denotes the Roman denarius…