When National Australia Bank (NAB) recently disclosed it faces a staggering AUSD 130 million in costs due to historical payroll underpayments, some dating back more than a decade, it was headline news. However, while reports tend to focus on the scale of such mistakes made by large institutions, the underlying message should resonate deeply with organisations of every size: payroll errors are a serious issue, and can lead to significant financial, regulatory, and reputational consequences, for organisations of any size.