So I drafted up these chores checklists for my kids. There are about 10 things that they need to do on a daily basis - and the end of the week they earn a reasonable allowance. So, as a preface to the "Family meeting" I called, I went over the basic concept, i.e. they're getting older, they need to start helping out more, etc., but the second I mentioned that they would receive money at the end of the week - my son was JUMPING to sign it - even before reading what the chores were.
Sensing a "teachable moment" I took it upon myself to go over the basic concept of not signing anything you don't understand, or haven't read yet, and that by signing their names they are agreeing to what is required of them the list, just like when buying a car, a house, it is a commitment, a contact, and you need to make sure that you read and understand what you're signing before you sign.
I then proceeded to review with them what was on the list, and had them sign it. My son quickly signed it and bounced off into the other room. My daughter, on the other hand sheepishly hesitated. Sensing maybe she didn't know where to sign - I pointed it out to her on the sheet.
"But dad..." she said "I can't read, and you said don't sign anything you haven't read yet"