I'm linking the procurement and human resources chapters of A Guide to the Project Management Body of Knowledge (PMBOK^® Guide) together for the simple reason that I have absolutely no idea why they're in there in the first place. I have never been in or encountered an organization of any size that lumps human resources and procurement departments under the head of project management.

I'm pretty sure this is because human resources and procurement should be understood as asset management, not project management. Asset and project management are completely different animals, with different objectives, tools and methods for attaining their respective goals.

Those differences were vividly illustrated for me when I was working on a software project for my organization's human resources department. I had loaded the schedule into a critical path network, pulled status and recalculated the projected end dates. When I was presenting the resulting Gantt chart to the human resources manager, I pointed out that one set of activities involving the software coders looked like it would be delayed, and, if it was, it would delay other key milestones.
 
"Tell everyone to come to work this weekend and maybe next," was his automatic reply. "Wait," I interjected. "These activities have nothing to do with your folks - it's the management information systems people who are involved here, and we don't even know what their difficulty is. It may not be fixable with more people working it." "No difference," he replied. "This project is so important that all of our assets must be performing optimally."

Of course, project management is not about the performance of assets. It's about attaining the scope that the customer is expecting, within the customer's parameters of cost and schedule.

I'm engaging in a little bit of hyperbole here, but most project managers don't concern themselves about whether they should have bought or rented a key piece of equipment. They care about whether or not the job gets done on time and within budget.

Procurement is in the same boat. Sure, it's important that the procurement professionals who work with you are very good at what they do. But they obtain assets and are similarly afflicted by the asset managers' mind set.

I just don't think we're kindred spirits. But, if there are any human resources or procurement heavy-hitters out there who think our managerial goals and techniques are completely compatible, I'd love to hear from you.