O'brien Law Plc is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Attorneys
• Attorneys Personal Injury & Property Damage Law
• Attorneys Dui And Traffic Law
• Attorneys Criminal Appeal
• Attorneys Employment & Labor Law

North American Industry Classification System (NAICS) Categories:

• Offices Of Lawyers > Attorneys Criminal Law > Attorneys Criminal Appeal Law
• Offices Of Lawyers > Attorneys Criminal Law > Attorneys Dui & Traffic Law
• Offices Of Lawyers > Attorneys Labor & Employment Law
• Offices Of Lawyers > Attorneys Personal Injury Law

Standard Industry Classification (SIC) Categories:

• Legal Services > Attorneys Criminal Law > Attorneys Criminal Appeal Law
• Legal Services > Attorneys Criminal Law > Attorneys Dui & Traffic Law
• Legal Services > Attorneys Labor & Employment Law
• Legal Services > Attorneys Personal Injury Law