A reversal is the process of sending a request to a receiving bank to reverse the original deposit transaction (pulling back funds from an employee that were sent via direct deposit through payroll). Typically this process is a banking remediation in response to a customer request.
Zenefits will only process reversals if the employee in question was paid in error and is no longer active with the company, or if the account the payment was sent to does not belong to the customer (e.g. employee entered wrong account information).
NOTE: Reversals must be requested within five business days of the ACH effective date per NATCHA regulation. There is nothing Zenefits can do to reverse an ACH payment after the five business day cutoff.