Practice Areas

Complex Civil and Business Litigation

Costello Law Firm represents business owners, licensed professionals, and entrepreneurs in complex civil and business disputes, in state and federal court, in arbitration, in government enforcement actions and before professional licensing boards.

Compliance and Corporate Internal Investigations

Costello Law Firm represents professionals and businesses in highly regulated industries. In our compliance practice we provide legal opinion letters, ongoing advice, employee manuals and tools to manage compliance with the complex city, state and federal employee wage and benefit laws to all businesses. We assist business boutiques and small businesses develop self-audit and compliance systems with internal controls to guard against litigation, employee malfeasance and government enforcement investigation audits and actions. For our corporate clients we conduct corporate internal investigations and assist with electronic discovery compliance procedures.In our general counsel practice assist business owners in the formation, governance and in general business matters such as leases and contracts.


Costello Law Firm represents business owners in employment disputes. We help companies develop robust employment compliance systems and prepare employee contracts. We conduct internal investigations and prepare report of findings in instances of employee malfeasance, such as theft and sexual harassment.

Health Care

Costello Law Firm represents licensed professionals, business owners, corporate executives, companies and businesses in the health care industry. Health care is a highly regulates industry that requires strict compliance with privacy, security and billing rules and regulations. We represent clients in litigation, during government investigations and in discipline actions before MQAC and DOH. We assist health care businesses with legal compliance. We provide general counsel services to health care practices including set up and dissolution.

White Collar

Costello Law Firm represents professionals, business owners and corporate executives under investigation or accused of wrong-doing relating to their professional job duties in government enforcement actions and in Federal and State Court. Individuals and companies can be held civilly and criminally liable for acts performed related to their work and the actions and decisions of their companies, colleagues and employees through complicated theories of agency liability in enforcement actions and criminal culpability in criminal actions. These cases are commonly referred to as “white collar” and involve some the most challenging and compelling dynamics in the field of criminal law. Actions can be initiated by civil, regulatory or criminal action by government agencies.

Investigations: Costello Law Firm attorneys have experience representing individuals during the critical investigation or “pre-charge” phase of Federal, State, County or City law enforcement investigations. Costello Law Firm assists individuals and companies navigate the complicated and intimidating dynamics of Federal Grand Jury Investigations. We protect the rights of targets, subjects and witnesses.

Government Enforcement & Civil Actions: We have been working with regulatory and government investigators, auditors, law enforcement and prosecutors for over two decades and are very familiar with advising our clients on the best approach to managing the investigation. Because our skills were honed in the courtroom, we have quick and effective analytical skills that work well under the pressure of a crisis caused by an accusation.

Formal Criminal Charges: Costello Law Firm has extensive experience representing clients charged in Federal Court and litigating complex Federal cases brought by the United States Attorney’s office, often by grand jury indictment.

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