I am exploring transitioning into the career field of Organizational Development. I'm looking for information about:

a) the types of job roles in the field

b) a "typical" career progression path

c) is organizational development something that most companies retain as an in-house function or is it something that is often outsourced to consultants in the field.

As an aside, my interest is primarily in leadership development and change management.

I appreciate any info from those currently (or previously) working within the field.

Thanks very much.