If you're in a business that meets with clients, consider asking them to review you and not your employer. That way your reviews will travel with you anywhere you go.
Photo by ~ Kevin McGrew ~.
Over at Review Trackers, they remind doctors that patients review the doctor's office and not just the doctor. If you stake a claim in advance on Google and Yelp, you'll let your clients review you independent of your employer.
This tip isn't just for doctors. Any professional who meets with clients should create a brand for themselves on a review. A great example is hair stylists. You want your clients to review your skills, not the salon. If you leave the salon and go out on your own, you can take that great reputation with you.
Check the link for how doctors can protect their brand online, but consider the tips if you want to create a following for yourself independent of your employer.