I recommend that you contact your previous job and verify if the form W-2 was issued and possibly mailed to the wrong address. If you are required to file a tax return, you must include all W-2 forms, no matter how small. Otherwise, your return will not be accurate and the IRS will send you a letter in the summer asking you for extra tax due on that additional W-2.
You may also contact IRS and request a copy of W-2 as well. If the company sent you one, they definitely sent one to the IRS as well: https://www.irs.gov/help-resources/tools-faqs/faqs-for-individuals/frequently-asked-tax-questions-an...
