Income in Box 14 of a T4 is still eligible for WITB calculation, even if it's employer-paid benefits. Box 14 is reported on line 101 of your return and is included in the calculations on Schedule 6 for WITB.
If you go to Forms Mode in TurboTax you can search for Schedule 6 and see the conditions and income sources included in the calculations. Please make sure you have correctly entered all of your slips and other earnings, and answered all required questions surrounding your residency, student status, dependants, disability tax credit, and other qualifying questions available on TurboTax form INFOWS (Personal Information Worksheet).
If TurboTax has calculated an amount of WITB for you, you are eligible to receive that payment.
