What does Industry Advocacy mean for NESPA members? NESPA Volunteers are not just industry leaders, they are also industry advocates. We know that your business can be affected by outside forces which are often out of your control. As part of NESPA, you are not alone in navigating these issues. You are also part of your local chapter and part of the national PHTA. We are not just reacting to events as they happen; but are proactively working on your behalf on a local, regional, and national level.