Elissa, Looking on your paystub or contacting your H. R. Department and should be a good place to get started.
Best of Luck
If your company uses Paychex as the payroll provider, look for the following:
401k EE - This is your deduction amount. 401k ER - This is the company match portion.
If you do not see these categories on your paycheck, I would recommend an appointment with HR to go over your individual situation and the company's 401k matching provision.
Elissa, just call Human Resources and ask what the 401(k) match is.