All payments from an employer to an employee are supposed to be treated as wages and included in the employee's W-2. Why did you get a 1099-MISC from the same company where you are a W-2 employee? Employers sometimes erroneously issue a 1099-MISC for special payments such as a bonus, commission, award, or reimbursement, instead of including it in the W-2. If that's what happened, there is a way to report the extra payment correctly on your tax return, in spite of the employer's error.
The only exceptions are if you were an employee and a contractor at different times during the year, or if the 1099-MISC is for a spiff (manufacturer's incentive payment). If it's a spiff, it does not go on Schedule C. There is a special way to report spiffs.
If you were an employee and a contractor at different times, you enter the W-2 and the 1099-MISC as if they are unrelated. You enter the W-2 in the W-2 section, as you would for any other job, and you enter the 1099-MISC as business income, which will go on Schedule C.
If it's any other situation, post back with the details of what the 1099-MISC payment is for and which box of the 1099-MISC the income is in, and I will give you detailed step-by-step instructions for how to enter it correctly in TurboTax.
