Here are several helpful websites that outline codes of professional ethics for the Learning Sciences, Instructional Technology, Human Performance, etc. as related to both the educational and corporate worlds.
Code of Professional Ethics Re: Educational Communities
AECT (Association for Educational Communications and Technology) has established a code of ethics, which has established a precedent in the academic community as a guide for professional conduct in the field of instructional technology.
http://www.aect.org/About/Ethics.htm
Code of Professional Ethics Re: Business World
Similar to AECT, ISPI (International Society for Performance Improvement) has established a professional code of ethics. This code is more directly related to the business community associated with Human Performance Technology, and corporate related Instructional Design. This website outlines not only the Code of Ethics for this domain, but in addition the Standards of Performance Technology as related to the corporate world.
http://www.certifiedpt.org/index.cfm?section=standards