If you itemize deductions (Schedule A), you may claim your job-related expenses, but they won't be fully deductible because they are subject to the 2% rule. (If you take the standard deduction, your job-related expenses won't make a difference on your tax return.)
To enter your job-related expenses (for your W-2 income):
Note: If using the TurboTax CD/Download (desktop) software, you'll use the Find function (instead of "My Account") to search for the topic.
For more information, please see this TurboTax FAQ: Can employees deduct any job-related expenses?