You'll have to go to the post office and submit a change of address form or go to Burger King and inform them that you no longer reside at the prior place and need Human Resources number to make them aware and have them send you it if it gets returned to them.
Since you have changed your business address due to quitting the job at burger king, you have to ensure that you update the information with the Internal Revenue Service (IRS) to make sure you receive any refunds or correspondences. The W-2 Form gives a list of the wages you earned and the taxes withheld.
I'd call and track down who or what dept sends out the W2s and contact them directly and confirm a real person has your correct address. Most corporations mail out tax documents in January, which is almost over. You may need to request a replacement copy. So, follow the yellow brick road to find and get your W2. Follow up with that post office change of address, too, and contact your bank, service providers, and magazines to update your mailing address, the post office only forwards mail for 6 months. BTW, they don't forward catalogs.