Woolworths' shares have been impacted by ongoing legal uncertainty, falling 20% over the past year, and currently trading slightly down amid broader market declines.

These record-keeping failures violated retail award obligations and have led to significant legal and financial consequences for both companies.

The court also highlighted systemic failures in tracking employee entitlements, penalty rates, and overtime for salaried workers over more than a decade.

Woolworths faces potential liabilities of up to $530 million due to underpayment issues, having already paid over $330 million to affected employees between 2013 and 2019, with additional costs expected for remediation and related expenses.

The Australian Retailers Association advocates for simplifying employment rules to improve clarity for employees and reduce legal risks for employers.

The court's decision, issued on September 5, relates to long-standing underpayment claims for salaried employees, with Woolworths potentially facing up to $750 million in remediation costs.

The legal case stems from Woolworths' failure to comply with employment laws under the General Retail Industry Award 2010 and the Fair Work Act, which led to significant repayments and ongoing legal and financial repercussions.

Together, Woolworths and Coles face combined costs exceeding $1 billion due to systemic wage underpayment issues affecting nearly 30,000 staff over several years.

Woolworths has already paid more than $486 million to staff and plans to allocate an additional $320-430 million for further remediation, but the complexity of the judgment means further analysis and potential appeals are still pending.

The Federal Court found both Woolworths and Coles failed to maintain accurate employment records, including rosters, overtime, and attendance, which contributed to underpayment issues.

The court's ruling could lead Woolworths facing up to $750 million in remediation costs, prompting the company to consider whether to appeal, with a case management conference scheduled for late October.

The retail award's complexity, with nearly 1,000 pay rates across 100 pages, complicates compliance for large and small retailers alike, contributing to systemic underpayment issues.

The legal proceedings were initiated by Adero Law and the Fair Work Ombudsman in 2019 and 2020, exposing systemic underpayment of 19,000 Woolworths workers and 8,768 Coles employees.