Wrong compensation used to calculate deferral

[pam@bbm]

An employee discovered that his employer incorrectly calculated his deferral for this week's payday. Employee has cashed his paycheck so it can't be voided and redone. Can employee pay back the employer and the employer make the correct deferral deposit to the plan? Or does the employer need to make a QNEC contribution?

[Lou S.]

Is it just one payroll?

Can you make an adjustment on the next payroll or was this the final 2015 payroll?

[pam@bbm]

This was the final 2015 payroll.