They legally have to send it to you on or before 1/31. Don't call the IRS, they aren't who you call for a W-2, you call your old employer. If you don't get it, pick up the phone and call them and just keep calling until you find the right department. Just tell them you are an employee and need a W-2, large companies get thousands of requests like that a year since so many people move and don't forward mail or they lose them.