Nearly everyone who vets an instructional designer wants to see samples. But so few want their confidential information in the public domain. Yet they must see samples to ensure your work is solid or they will set up some kind of evaluation to test your knowledge. In many cases that is difficult to do efficiently with every candidate.
I cannot provide you with samples of all of my work. Early in my career I faced a conundrum - how can I supply samples without permission. So I've obtained permission for most of these samples or in some cases I've created examples of what I've done - in a couple of cases I scrubbed the samples so there is no data that represents the original client. Without these extreme measures no evidence of competency would be possible.
Thus I ask you to take what you see with a grain of salt. Some of my best work is locked away, some has been consumed and the organization has moved on and some I have here for you to examine for yourself.