Petrine Costigan
Petrine Costigan

Petrine Costigan

Principal Petrine Costigan Lawyers

location
Sydney, NSW
Click to Reveal Phone Number+6128203..

About Petrine

Petrine Costigan serves as the Principal of her own firm, bringing a wealth of expertise in employment and industrial law. She is a respected and trusted advisor to executives, small and medium businesses, and employees. With a nuanced understanding of intricate and sensitive issues, Petrine is known for her innovative and tenacious approach to resolving such matters. Her strategic, lateral thinking has led to outcomes that are both valuable and pertinent to the needs of her clients. Though she favours non-litigation solutions, her substantial litigation experience spans appearances in the Federal Court, Supreme Court, Federal and State Commissions, Federal Magistrates Court, District Court, Local Court, and Human Rights Commission. Petrine is actively involved in the legal community as a member of the NSW Law Society Employment Law Committee and contributes insights on discrimination matters. Her practice encompasses a diverse range of areas including discrimination issues, employment termination, redundancy, investigations, contract negotiations, victimisation, bullying, harassment, and legal risk management. Petrine excels in drafting employment contracts, human resources policies, contractor agreements, and handling director and shareholder disputes. Her work in settlement negotiations is informed by her thorough knowledge of legal nuances, ensuring her clients receive comprehensive guidance and representation. She has been leading Petrine Costigan Lawyers since 2011, following a successful tenure as a partner at Haywards Solicitors. With her positive and creative attitude towards law, Petrine remains a prominent figure in her field, offering tailored solutions and robust representation to her clients.

Practice Areas

Employment Law

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Resume

Experience

Director
Director
Petrine Costigan Lawyers
Jan 2011 - Present · 15 years 6 months
Partner
Partner
Haywards Solicitors
Jan 1998 - Dec 2010 · 12 years 11 months

Contact Information

Sydney, NSW

Location111 Elizabeth Street, Sydney, NSW
Click to Reveal Phone Number+6128203..
WebsiteView Website

Practice Certificate

Name
Petrine Costigan
Date of Admission
1993
Certification type
Principal of a law practice
Class
Law Practice
Region
NSW
CheckLast checked: 9 Jul 2026•
Checked with the Law Society of NSW

Practice Categories

Employment Law
  • Disputes
  • Unfair Dismissal
  • Workers Compensation