Dear Employer.

Let me explain the nature of our relationship.

I have knowledge, skills and time to sell you, you have money to buy my time and use my knowledge and skills during that time.

We have an agreement where I work 0800 to 1700 every normal work day for a negotiated rate.

During that time you are the one to tell me what my tasks are and reap the benefits of their completion.

Outside of that time I decide my own tasks to complete and reap my own rewards for completing them.

If you want to gain access to data I produce outside normal work hours the time it takes to produce said data is me working for you. (Remember that this is a task you have requested I perform).

This means that this is a new business relationship you want to engage with me.

To cut to the chase, how much is my proprietary data worth to you?