In June 1920, Walker resigned his position after one year.

Later Walker resigned his position on July 4, 2006 after being charged with a Civil Rights violations.

Walker resigned in 2000.

In December 2006, Walker resigned from the National Council.

After the 2011 season, Coach Walker resigned and was hired as the new coach for the Vestavia softball team.

That year, Walker resigned as chairman and president of the company, continuing to work as a programmer.

As a result Governor Walker resigned early and an election was called.

In 1960, Walker resigned from the AIA after a conflict over professional ethics.

Walker resigned from Scientific American in 1990 after 12 years.

Crisp claimed Walker had resigned, but an alleged personal matter between the pair was said to have been the spark.