You get a copy of your W-2 from McDonald's through the mail. The Internal Revenue Service mandates McDonald's to send you Form W-2, as stated by the Huffington Post.
Employers should file a W-2 form, which details the taxes withheld by your employer from your paycheck, by the end of January every year, according to the IRS. Contact McDonald's to ascertain if the company has your correct address and has mailed the form to you. If you do not get your W-2 by February 14, consider contacting the IRS, stating your full name, Social Security Number and address, as recommended by the Huffington Post. Additionally, include the contact information of McDonald’s.