AIGA encourages its members to conduct practices with the highest level of professional conduct. To provide a framework and guidelines to do so, therefore, we provide a number of resources to support designers in maintaining the professional practices.
AMEN! Here’s the link to the site:
AIGA standard contract (pdf document)
AIGA letter for speculative work (word document)
AIGA standard terms and conditions for designer/client Relationships (pdf document)