Failure to offer deferrals can create an employer obligation
When a 401(k) plan fails to give an eligible employee the opportunity to elect salary deferrals, correction can require an employer-funded qualified nonelective contribution for the missed deferral opportunity, plus missed matching contributions and earnings. The employer cannot solve the old failure simply by permitting future payroll deductions. An owner should therefore check eligibility and entry dates before reserving all retirement cash for the owner's account. The standard correction framework and available reduced-contribution methods have different conditions and deadlines. Current law and guidance for automatic enrollment failures can also differ from older examples. Do not select a reduced percentage solely because a web chart shows it. Identify the failure, affected period, notice requirements, and applicable correction authority. An employee who would have elected zero still must have been offered the required opportunity; management cannot infer a waiver from silence.
Calculate the missed opportunity separately from the full deferral
Assume the applicable standard correction method uses a 50% missed-opportunity contribution and an excluded employee had $60,000 of compensation during the affected period. Suppose the supported missed-deferral rate under the applicable method is 6%. The missed deferral is $3,600 and the employer's illustrative missed-opportunity contribution is $1,800. If the plan would have matched that deferral dollar for dollar up to 3% of compensation, the missed match is another $1,800, before earnings. The combined illustrative principal correction is $3,600, but it is composed of two different obligations. It is not permission to withhold $3,600 retroactively from the employee's next paycheck. Actual correction rates, safe harbors, compensation, match terms, and earnings calculations must be determined from the real plan and applicable guidance. The numbers show why correcting only the missed match may leave the deferral-opportunity failure unresolved.
Reconstruct eligibility and the actual exclusion period
Collect the signed plan, amendments, census, birth and hire dates, service records, entry dates, employee notices, election forms, and payroll history. Identify when the employee first should have received an opportunity and when correct participation began. Review related employers, leased workers, and classification errors rather than checking only full-time staff on the current payroll list. The plan may provide more generous entry than the statutory minimum. A person who declined benefits elsewhere did not necessarily decline this plan. Retain any actual affirmative election and its delivery evidence. Determine whether the failure affected one employee or an entire payroll class. A new provider may have inherited a missing eligibility flag, so inspect earlier periods instead of assuming the error began on the migration date. Reliable dates determine both compensation and available correction methods.
Document the correction route and prevent recurrence
Have the administrator identify the supported correction program and current safe-harbor conditions, including commencement of correct deferrals, required notices, missed employer contributions, earnings, and completion deadlines. Preserve the calculation, authorizations, participant communication, deposit confirmation, and final allocation. Do not count owner contributions as a substitute for amounts owed to excluded employees. If the company cannot fund correction immediately, address the obligation through the actual permitted process rather than deleting the employee from the census. Add an eligibility-to-payroll reconciliation with a named reviewer before every entry date and after acquisitions or provider changes. The useful outcome is restored employee benefits and a reliable enrollment control. This protects the owner's plan as well as the affected worker: a retirement arrangement that funds the founder correctly but excludes eligible employees can still have a qualification failure requiring company cash and corrective administration.
Distinguish the failure from late remittance
An exclusion means the worker never received the required election opportunity. A late-remittance failure means payroll actually withheld contributions but the employer deposited them late. Those problems have different principal amounts, earnings calculations, and agency correction obligations. If the employee was enrolled late and later deductions were also retained too long, both failures can exist. Build separate rows for the exclusion period and each delayed deposit rather than choosing whichever remedy costs less. The employer should not count a lost-opportunity contribution as repayment of withheld wages. Likewise, depositing actual withheld money does not necessarily compensate for the earlier opportunity the worker never had. Classifying each period accurately helps the owner establish the full funding obligation and prevents an apparently completed correction from leaving a second operational failure unresolved.
Sources & further reading
Consult the original guidance and its effective dates. These references support the educational discussion; their application depends on the specific facts.