G8 said a preliminary assessment indicated it had underpaid its workers between $50 million and $80 million since July 1, 2014. It said it expects the after-tax cost to be between $30 million and $60 million. G8 Education owns about 470 childcare centres around the country that operate under 21 different brands. Some of its brands include First Grammar, Creative Garden, Community Kids, Kinder Haven, Great Beginnings, Early Learning Services and Penguin Childcare. G8 has started a full remediation program. It expects the backpay program to complete by July 31, 2021. Chief executive Gary Carroll apologised unreservedly to affected staff members. "As soon as we identified and quantified this issue, we initiated a remediation program to ensure they will be paid every dollar they are owed.