Accuracy during certification is of paramount importance due to the legal ramifications of "willful misrepresentation." Claimants must report any earnings from part-time or temporary work performed during the week they are claiming. Failing to disclose income, even if it is below the weekly benefit rate, can be flagged by the NJDOL’s cross-matching systems with the Division of Taxation. Such discrepancies can lead to "non-fraud" or "fraud" overpayments, resulting in the suspension of benefits, financial penalties, and a requirement to pay back the funds. The certification process thus acts as a weekly audit of the claimant's honesty and diligence.

To begin the process, a claimant must adhere to a strict schedule based on their Social Security Number (SSN). NJDOL utilizes a "designated window" system to manage server traffic, assigning specific days and times during which an individual can log in to the online portal or call the automated phone system. If a claimant misses their window, they are often relegated to "missed window" periods, usually on Fridays or Saturdays. This scheduling underscore the logistical challenges faced by state agencies in processing high volumes of data while ensuring system stability.

In recent years, the NJDOL has modernized its interface to improve user experience, yet technical hurdles remain. Common issues include the "claim is not payable" message, which often triggers when a claimant answers a question in a way that suggests they are no longer eligible—for example, indicating they were too ill to work or that they refused a job offer. These triggers lead to a manual review by a claims examiner, a process that can significantly delay payments. This tension between automated efficiency and the need for human oversight remains a defining characteristic of the New Jersey unemployment system.