Review for Diamond Jo Casino Northwood Review For Diamond Jo Casino Northwood Google User May 19 '17 at 23:45 Diamond Jo Casino Worth is a nightmare for employees. Over twenty people have left the kitchen due to the ugly verbal abuse and daily threats, some had been there over 10 years. Good luck getting a payout from the slot machines. Go to several nearby casinos in Minnesota and Eastern Iowa, you'll be glad you did. View full site to comment or like