Sarah Wonnell, PHR-CA, SHRM-SCP

Sarah Wonnell, PHR-CA, SHRM-SCP
Director of Human Resources

P 312.670.7444 | F 312.670.8301

Sarah brings more than 15 years of human resources and talent management expertise to the firm. She utilizes her expertise to monitor and fulfill ORBA’s staffing needs and leads its efforts in recruiting top accounting talent to the firm. Sarah also plays an instrumental role in establishing policies and standards to ensure a stable, productive, safe and welcoming work environment. As such, she spearheads several of the firm’s morale boosting activities, including its holiday party and summer outing.

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Firms News


ORBA Ranked Among Crain’s 2019 Largest Accounting Firms
CHICAGO — Ostrow Reisin Berk & Abrams, Ltd. (ORBA), a full-service accounting, tax and business consulting firm, has been ranked as one of the largest accounting firms in Chicago, according to an annual survey published by Crain’s Chicago Business. This year, ORBA ranks as the 18th largest accounting firm with 151 professional staff members.

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Media Mentions




ORBA will gladly provide you with hard copies of the useful guides listed below. Select which guides you would like to receive and submit the form below.

  • Tax Pocket Guide
  • Tax Planning Guide
  • Records Retention Schedule
  • Auto, Travel & Business Log

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Forward Thinking
Forward Thinking