Atty. John O. Shirley
John Shirley practices in the area of business law, having represented public utilities before the Louisiana Public Service Commission for over twenty years. His practice consists of representing electric, gas, water and sewer utilities, motor carriers, telecommunications companies, and wind and other renewable energy companies before the Louisiana Public Service Commission.
Profile Summary
About John O. Shirley at a glance
John O. Shirley is a government and energy attorney based in Baton Rouge, Louisiana, practicing at Phelps Dunbar LLP. Admitted to practice in Louisiana, Louisiana State Bar Association. Educated at Louisiana State University (J.D., 1986) and Southeastern Louisiana University (BS, 1976). Recognitions include Best Lawyers in America — Energy Law (2026), Best Lawyers in America — Government Relations Practice (2026), and Best Lawyers in America — Special Focus: (2026). Serands clients in Baton Rouge, LA and the surrounding metropolitan area.
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About
- John Shirley practices in the area of business law, having represented public utilities before the Louisiana Public Service Commission for over twenty years
- His practice consists of representing electric, gas, water and sewer utilities, motor carriers, telecommunications companies, and wind and other renewable energy companies before the Louisiana Public Service Commission
- He also consults and lobbies elected public service commissioners, the Louisiana Bond Commission, executive staff and the Louisiana legislature on behalf of his clients
- Prior to joining the firm, he was the founding partner of Shirley, Ezell, Guarisco & Marionneaux, LLC
Practice Areas Explained
John O. Shirley's Areas of Practice
Each practice area below reflects the types of cases John O. Shirley handles, with a brief overview of what that area of law covers.
Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.
John O. Shirley is one of 132,225 government attorneys indexed nationally. Browse government attorneys in Louisiana →
Energy attorneys for oil & gas, renewables, utility regulation, and energy sector transactions.
John O. Shirley is one of 36,230 energy attorneys indexed nationally. Browse energy attorneys in Louisiana →
Jurisdictional Context
Why local counsel matters in Louisiana
Practicing law in Louisiana. Legal matters in Louisiana are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Baton Rouge are typically filed in the local municipal court or the appropriate Louisiana state district court, depending on subject matter and amount in controversy. An attorney licensed in Louisiana brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Louisiana courts without local counsel or pro hac vice admission.
Looking for additional Louisiana attorneys? Browse all attorneys in Baton Rouge or all attorneys in Louisiana.
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