"Too late to get a corrected W-2 c plus the administrators said that they withheld correctly."

The taxpayer would be responsible for setting up the new job knowing there is already some contribution for the year from the prior job.

The corrected W2 would be issued if the taxpayer had notified the plan administrator by March 1.

"The corrective distributions will have to be initiated by the TP at a later date."

From: https://www.irs.gov/retirement-plans/consequences-to-a-participant-who-makes-excess-deferrals-to-a-4...

"Additionally, the corrective distribution must be made be made no later than April 15th following the close of the calendar year during which the excess deferral was made. See IRC Section 402(g)(2)(A)(ii). For example, excess deferrals made during 2016 must be distributed by April 15, 2017. This April 15th deadline is not postponed by extending the filing of the employee's federal income tax return."