Work Ticket Change Management?

Dear Lazywebz:

My Dear Employer has been using Atlassian's Jira system for bug tracking. What we really need however is a proper change management system, one that enforces & records an approval process for work tickets.

Any recommendations for a change control system? The powers-that-be don't want to give up Jira so something which can interact with it would be ideal, but I'm open to anything reasonably priced.

I've used Remedy at my prior employer so that's already on my list.