Working Chores

I've decided to implement chore charts once again. The main reason is that I need help around the house. I still don't believe in making their life miserable for my convenience, so I will motivate them with good ol' cash. The more I thought about how to do this the more I realised that it can also be a lesson for them in working and earning wages. In past chore charts I also did a money earning model, but I think I will make this one more like a job than just chores.
I will make a sign listing all the "jobs" available, how much each will pay, and by when they need to be done (dead line).
They will have a choice of jobs, meaning I will not assign them specific chores, instead they will chose what they want to work on themselves.
They also will get to chose if they want to work at all or not. If not, that will fine. Just like in the rest of the world, if they work they will earn money, if they don't work they will not. Simple as that.
I will make "time cards" where they will log in the chore they did, and if it was done properly and on time. They will recieve their wages only if the job was done as required, no half effort will be payed for.
Then every 2 weeks they will turn their time cards in and receive their wages, then they are free to spend their money as they wish.
There will also be a "direct deposit" option they can chose which is that instead of me just handing over the cash to them I will be the "Bank" and keep it for them. If they chose to save their money in the Bank they will also earn interest. The longer they keep their money in the Bank the more interest they will earn.
There are some details about this program that I still need to take care of, but I think this is a good way to combine both our belief in freedom of choice, and showing our children that hard work, wise choices and faith in God yield prosperity.