I would be very weary of this requester. He will sit there and approve all your work and put great work! Keep up the good Job! Then in a few weeks to a month he will hard block you with no warning. He doesn't reply to messages you send to him. He doesn't take advice about anything you send to him. He was paying 0.03 for 10 images and sometimes you had to draw boxes around people sometimes 0-15 in an image. He is not worth it. Work at your own discretion. He is another one who doesn't understand what the qualifications are used for. I wish Mturk would explain it to these requesters at times.
I have not gotten a hardblock from Michael Turk and as mentioned from others, always encouraging and pays within hours.
Yes I had that also he will lead you to believe you are doing great work and then he will hard block you. I did close to 300 of his hits and then wham hard block!