Deductions & credits

If they don't take out any taxes or SS and Medicare (FICA) you are not an employee but an independent contractor.  Instead of giving you a W2 at the end of the year they should give you a 1099Misc if they paid you more than $600.  Did you get a 1099Misc?  I would ask them about it.

 

You only give them a W4 if you are an employee getting a W2.