The EIN on my w-2 is tied to Trinet HR XI LLC. I do not work for Trinet HR XI LLC. Trinet HR XI LLC takes care of payroll processing for the company I work for. I do not know what my employer's tax id is. This seems odd. I've never seen payroll house information as employer. Do I just enter the info as stated on the w-2 without questioning my boss about it?
