In January, mailboxes begin to bulge with W2s, 1099s, statements from financial institutions and IRS forms. John Ulzheimer, president of consumer education for Smartcredit.com, calls January the most dangerous month for mail. You certainly shouldn’t stop your mail because many of the items are time-sensitive. If you haven’t received them all by the end of January, then it’s time to pick up the phone and start calling the banks, your HR department or HR department.
Source: https://thehackernews.com/2010/12/january-deemed-most-dangerous-month-for.html