As you can read in many of the reviews, an employee is considered valuable if they are billable. So, internal employees (HR, recruiting, etc) are dispensable. The flexibility mentioned above, which was one of the greatest perks, is being taken away and they are laying employees off and then rehiring people in St. Louis (company headquarters).
They also like to lay people off for bogus reasons, quite often it's poor company performance, and then within a couple months they rehire for that same position. And after laying someone off they turn around and tell management that it was the employee's poor performance that was the cause for dismissal.
Upper management also asks HR employees to talk to consultants and ask them to write good reviews for this website in exchange for a gift card. I believe a large number of these one and two line decent reviews are from one of these PR pushes.
Perficient loves to remind their employees of the company's values, ethics and integrity. There's a reason they have to talk about it so much...