"The Six Sigma Yellow Belt (CSSYB) certification will be aimed at those
new to the world of Six Sigma who have a small role, interest, or need to develop foundational knowledge.
Yellow Belts can be entry-level employees who seek to improve their world or executive champions who require an overview of Six Sigma and DMAIC. This certification will adopt the approach of advancing the concept and potential of using Six Sigma tools and methodologies within
The Six Sigma Yellow Belt certification requires no education or work experience."
The following is directly from the ASQ CSSGB pdf:
"The Six Sigma Green Belt (CSSGB) operates in support or under the supervision of a Six Sigma Black Belt, analyzes and solves quality problems, and is involved in quality improvement projects. A Green Belt has at least three years of work experience and wants to demonstrate his or her knowledge of Six Sigma tools and processes."