Yes, if you are mailing your State of Michigan return, attach any income documents such as any W-2 or 1099 forms you have.
I don't think so, I looked through the Michigan Tax Instructions and can't find that it is necessary. <a rel="nofollow" target="_blank" href="http://www.michigan.gov/documents/taxes/MI-1040_Instruction_Book_609085_7.pdf">http://www.michigan.gov/documents/taxes/MI-1040_Instruction_Book_609085_7.pdf</a>Pages 4-5. Additionally, the turbo tax cover sheet doesn't mention it.