This verse is the first time in the parable that the laborers have spoken. Earlier verbs in the parable were in the "at that point in time" tense of Greek, which is has been translated as the past. The verbs in this verse, except for "hired," are in the present tense. This switch of tenses gives the story a more intimate, "homier" feel, more like a folk tale in English, as though the listener has been brought up in time to the present, but this is a gimmick. The parable continues after this.
There is a formal "you pronoun" in the statement at the end by the employer. The "go" is a command, that needs no "you" pronoun in Greek or English, but after the "also" this pronoun appears, emphasizing that him means the laborers with a "your yourselve."
Note that the workers do not say that they have been idle all day, but that no one has hired them. They are wise enough not to challenge the housemaster's mistaken assumptions.
Christ's Words in Matthew as a Guide to 40 Days of Prayer.