Well, John Gi - I'll tell you how it works for me. (I'm an employee for different companies than McD & TB, but this should be similar)
You need to get on your company website, and go to the "Employee Benefits" page. Somewhere on there, you should find a link to discount services offered to the company employees. From there, search for cell phone service, and then find Verizon's plan for the company employees. You'll be able to see all of your discounts there. You may get a monthly deduction on service, along with a discount on any accessories.
With Verizon, you need to send them an email from your corporate (not personal) account. For you, it may be something like "johngi(at)taco-bell.com". Verizon will send you a confirmation email to the corporate account to prove that you are an employee. After that, you will register on the Verizon site, and you're good to go!
Best of luck!
AzJazz