The publication stated that while she was escorted out of the Ivy due to intoxication, security footage reviewed by investigators did not show her visibly inebriated upon returning to the office.
As it stands, the 33-year-old's role and name have not been disclosed.
NSW Police are now preparing a report for the coroner, and believe her death was the result of self-harm.
EY is regarded as one of Australia's top four accounting firms, along with Deloitte, KPMG and PwC.
Currently firms are under way with their peak auditing season, which typically lasts from July through to September.
During this busy period, Australia's biggest companies must lodge their Annual Reports by September 30, which are prepared by firms like EY. This can result in lengthy work hours and dramatically increased workloads.
During a 2019 to 2020 parliamentary inquiry into audit quality, the director of professional services recruitment firm Robert Walters said employees can work up to "50 to 60 hours minimum a week" during busy periods, the Australian Financial Review reports.
However, Sinead Hourigan said that "[the] busy period is becoming the new normal".
Macquarie University accounting professor James Guthrie also said big four companies had a "flawed organisational culture" where junior employees commonly faced intense time pressures and worked long hours unsupervised.
In 2021, EY's Hong Kong branch faced criticisms after a leaked email showed a manager demanding staff to work on weekends and up till 11.30pm on weeknights.
"Staff must start work by 9.30am and finish no earlier than 11.30pm," the email read.
"I think midnight is common in peak seasons – it counts on the discipline and responsibility of yourself.
"For weekends, I expect at least one day we are spending the whole day (from 10am-7.30pm) in office."
In a comment to The Australian, EY's Oceania CEO David Larocca said contact had been made with the deceased's family, and the firm is assisting police with their ongoing investigations. Counselling has also been offered to all staff.
The company will also be undertaking a "comprehensive and wide-ranging internal review encompassing health and safety, security, social events".
"Our chief mental health officer will be part of an ongoing review and has been instrumental over the weekend in providing ongoing advice and guidance," he said.
Where to get help:
• Lifeline: 0800 543 354 (available 24/7)
• Suicide Crisis Helpline: 0508 828 865 (0508 TAUTOKO (available 24/7)
• Youthline:0800 376 633 or text 234 (available 24/7)
• Kidsline: 0800 543 754 (available 24/7)
• Whatsup: 0800 942 8787 (12pm to 11pm)
• Depression helpline: 0800 111 757 or text 4202 (available 24/7)
• Anxiety helpline: 0800 269 4389 (0800 ANXIETY) (available 24/7)
• Rainbow Youth: (09) 376 4155
If it is an emergency and you feel like you or someone else is at risk, call 111.
