Practical brief for Florida trial attorneys and litigation paralegals.
Credibility is often the case. Before a deposition or trial, counsel needs to know who the witness is, what they have said before, and whether anything in the public record bears on bias or truthfulness. A witness background check in Florida, done lawfully and documented properly, gives counsel facts to use and keeps surprises off the record.
This guide explains how the Florida Evidence Code frames impeachment, what an investigator researches, and where the ethical lines are.
Key witness deposing soon and you know little about them?
Call (321) 340-3280 to talk it through with a licensed investigator. We discuss rates by phone and can usually start quickly. Prefer to write? Use our case request form.
How the Florida Evidence Code frames impeachment
Research is only useful if it fits a recognized method of attack. Section 90.608, Florida Statutes, lists ways a party may attack a witness’s credibility, including by introducing prior inconsistent statements, showing the witness is biased, attacking character for truthfulness as provided in sections 90.609 and 90.610, showing a defect in capacity to observe, remember or recount, and proof by other witnesses that material facts are not as testified.
Section 90.610 addresses conviction of a crime: a witness may be impeached by evidence of a conviction for a crime punishable by death or imprisonment over one year, or for a crime involving dishonesty or false statement, regardless of punishment, subject to the statute’s exceptions. Section 90.609 allows character evidence about truthfulness in the form of reputation, with limits. Section 90.614 covers prior statements of witnesses.
Whether a specific fact is admissible, and how to use it, is counsel’s call. The investigator’s job is to find the facts and document the sources so counsel can make that call.
What a witness background check covers
Identity confirmation
Everything else depends on researching the right person. We confirm full name, aliases, date of birth and address history before attributing any record. Common names get extra care.
Criminal history
County court records in Florida and other states, the Florida Department of Law Enforcement criminal history where appropriate, Department of Corrections records and federal court records. We report charges and dispositions as the records show them and obtain case numbers so counsel can order certified copies. An arrest is not a conviction, and our reports say which is which.
Civil litigation history
Prior lawsuits, claims and judgments can show patterns, financial pressure, prior testimony or relationships with parties. Past depositions and affidavits in other cases can also be a source of prior statements.
Relationships and bias
Business ties, employment history, shared addresses, entity filings on Sunbiz, family relationships and financial links to a party. Bias evidence is often more persuasive than character evidence, and it comes from connecting ordinary records.
Professional licenses and discipline
For expert and professional witnesses, license status and public disciplinary history from Florida and other licensing boards, plus published work and prior testimony that may conflict with current opinions.
Public statements and social media
Public posts, reviews, comments, interviews and online profiles can contain statements about the events, the parties or the witness’s physical activities. We capture and preserve what is publicly visible, with dates and URLs. See our guide to social media evidence in Florida litigation.
Capacity to observe
For eyewitnesses, scene facts matter: where they say they stood, what they could see, the lighting and distance. A site visit with photographs and measurements can test an account. See our scene investigations service.
The ethical lines
- No pretexting. Investigators acting for counsel do not misrepresent who they are to obtain information. Florida Bar Rules 4-4.1 and 4-8.4(c) prohibit lawyers from making false statements and engaging in dishonesty, and Rule 4-5.3 makes lawyers responsible for nonlawyer assistants. See our guide to Rule 4-5.3 and investigators.
- No contact with represented persons about the subject of the representation without the consent of their lawyer, consistent with Rule 4-4.2.
- No private-account access. We view public content only. We do not send friend or follow requests to gain access, use fake profiles or access anyone’s accounts.
- Permissible purpose for protected data. Driver and credit-header data are used only as federal law allows, such as the litigation exception in the Driver’s Privacy Protection Act.
- No witness intimidation. Background research is passive. If counsel wants a witness interviewed, we do that openly and respectfully, and never to discourage testimony.
Timing: when to run the research
Before the deposition is best, so counsel can ask about convictions, prior statements and relationships under oath. A second, narrower update before trial catches new filings and posts. For witnesses identified late, we can run a focused check on a short deadline. Tell us on the first call what the date is.
What counsel receives
A concise, sourced report organized by impeachment category: identity confirmation, convictions with case numbers and dispositions, civil cases, relationships relevant to bias, license and discipline history, preserved public statements, and suggested follow-up. Records that look relevant but cannot be tied to the witness with confidence are labeled that way. Counsel gets facts and sources, not speculation.
Related services
Background research pairs naturally with witness locates, witness interviews and statements, trial and hearing support and our Florida background checks. For corporate witnesses and executives, see our guide to executive background checks.
About MAYN Investigations
MAYN Investigations is a Florida private investigation agency licensed under Chapter 493 (agency license A3400126). We support trial counsel statewide, including firms in Orlando, Jacksonville, West Palm Beach and Sanford.
FAQ: witness background research in Florida
Can you run a background check on the opposing party?
Yes, through public records and lawful sources, at counsel’s direction. We do not contact a represented party.
Do arrests count for impeachment?
Section 90.610 addresses convictions, not arrests. An arrest may still be relevant for other purposes, such as bias, in some circumstances, but that is a question for counsel. Our reports separate arrests from convictions.
Is the background report itself admissible?
Usually the report is a work tool for counsel. The underlying certified records and testimony are what get used in court, subject to the Evidence Code.
How long does a witness background check take?
A focused check on one witness can often be done quickly. Multi-state histories or many witnesses take longer. Call with the deposition or trial date and we will tell you what is realistic.
Do you research expert witnesses?
Yes. We research licenses, discipline, publications, prior testimony that is publicly available, and business relationships relevant to bias.
Talk to an investigator before your next deposition
Call (321) 340-3280 with the matter, the county and your deadline. We will tell you what is realistic, what it costs and how fast we can start. Rates are discussed by phone. You can also send a case request and we will get back to you.
MAYN Investigations is a licensed and insured Florida private investigation agency working statewide for law firms and businesses. Follow us on Instagram at @mayninvestigations for short briefs on Florida investigations, and browse more investigation insights for attorneys.
This article is general information for attorneys and legal professionals. It is not legal advice, and decisions about discovery, admissibility and compliance belong to counsel.
