I have a situation in which an employer's NQ plan should have credited its COO's fully vested NQ plan account with a significant amount of employer non-elective contributions over the last 5-6 years. COO is still working for the taxable employer and the crediting failure doesn't impact how or when the non-elective amounts, once credited, will ultimately be paid to the COO. Client would like to credit all the past-due amounts into the COO's account in 2019. It feels like this is a likely 409A violation but I am having trouble identifying the violation since the error doesn't involve an employee deferral election or the timing or form of benefit payment. The error does, however, mean that Form W-2s issued to the COO showed the wrong amount of FICA wages in each year.
Anyone have any thoughts as to whether and how the error violates 409A and how it might be corrected?
Thanks.