Evidence can determine whether a civil claim or business dispute succeeds, but useful evidence is more than a stack of documents. Courts need information that is relevant, reliable, preserved in its original form when possible, and connected to a witness or other foundation showing what it is and how it was created.
For residents and businesses in Dallas, TX, the safest approach is to begin preserving potentially relevant material as soon as a dispute becomes reasonably likely—not only after a lawsuit is filed.
What evidence should be preserved first?
Preserve anything that may help prove what happened, who was involved, the resulting harm, or the amount of money at issue. Evidence can include:
- Contracts, invoices, estimates, receipts, and payment records
- Emails, text messages, direct messages, and internal business communications
- Photographs, videos, audio recordings, and surveillance footage
- Medical records, repair records, inspection reports, and repair estimates
- Calendars, notes, time records, delivery confirmations, and logs
- Social media posts, website pages, online listings, and electronic advertisements
- Computer files, spreadsheets, metadata, and document revision histories
- Names and contact information for people who saw events or have relevant knowledge
Do not assume that only favorable evidence must be retained. Deleting, altering, or concealing unfavorable information can create additional legal problems and may affect the court’s view of the entire case.
When does the duty to preserve evidence begin?
The duty generally arises when a person or business knows, or reasonably should know, that a claim may be filed and that certain evidence could be relevant. A formal lawsuit is not always required.
For example, a preservation concern may arise after:
- A written demand alleging property damage or unpaid amounts
- A serious injury, workplace incident, or premises event
- Notice of a threatened contract or partnership dispute
- A customer complaint involving a product, service, or safety issue
- Receipt of a demand letter or notice of an impending claim
- A dispute involving an employee, vendor, customer, owner, or business partner
Businesses should consider issuing a written litigation hold. This is an internal instruction directing relevant people not to delete, overwrite, modify, or discard potentially important information. The hold should address email, messaging applications, phones, shared drives, cloud accounts, paper files, security footage, and automatic deletion settings.
How should electronic evidence be preserved?
Electronic evidence should be kept in a way that protects both its content and its history. A screenshot may show what appeared on a screen, but it may not preserve the complete conversation, file information, date, sender details, or surrounding messages.
Useful preservation steps include:
- Save complete email messages rather than only printed copies or screenshots.
- Export full text-message or messaging-app conversations when the application permits it.
- Keep original photographs and videos on the device or storage system where they were created.
- Make a separate working copy for review so the original is not repeatedly edited.
- Preserve file names, dates, sender information, and other available metadata.
- Record when the material was collected, by whom, from what device or account, and where it was stored.
- Suspend automatic deletion for emails, messages, cloud files, and surveillance recordings.
- Avoid cropping, filtering, enhancing, renaming, or converting original files unless the original is also preserved.
Surveillance footage requires particular speed. Many systems automatically record over older footage after a short period. A written preservation request should identify the approximate date, time range, location, and event. If the footage is held by another person or business, preserve proof that the request was made and keep any response received.
How can paper documents and physical evidence be protected?
Keep original paper records in a secure, dry location. Dallas weather can include intense heat, storms, and periods of high humidity, so photographs, receipts, and other paper materials should not be left in vehicles, garages, outdoor areas, or places vulnerable to water damage.
For physical objects, avoid unnecessary handling, cleaning, repair, disposal, or alteration. This may include a damaged product, a failed component, clothing, packaging, construction material, or equipment involved in a dispute.
Create a basic evidence log containing:
- A description of the item
- The date and place it was obtained
- The person who collected it
- Its condition when collected
- Any photographs taken
- Each later transfer or change in custody
The evidence log does not replace testimony or other foundation requirements, but it can help explain where an item came from and whether it remained substantially unchanged.
How is evidence obtained from another person?
Texas civil procedure permits several discovery tools for obtaining information after a lawsuit begins. Depending on the case, these may include required disclosures, requests for production, interrogatories, requests for admission, depositions, and requests to inspect property.
A request for production can seek documents and electronically stored information within another party’s possession, custody, or control. The request should describe the material with enough detail to identify what is being sought, such as invoices for a particular project, communications about a contract, or video from a specified time period.
Information may also be obtained from nonparties through appropriate legal process. A subpoena may require a person or organization to produce documents, provide testimony, or both. Special procedures may apply to medical records, financial information, employee information, communications, and other protected material.
Discovery is not an unrestricted search. Requests generally must be relevant and proportionate, and privileges may protect certain communications or materials. Personal information unrelated to the dispute should not be collected, shared, or filed unnecessarily.
How do you show that a document or recording is authentic?
Authentication means presenting enough evidence to show that an item is what the party claims it is. A witness who created, received, observed, or maintained the item may provide that foundation.
Examples include testimony that:
- A person sent or received a particular email
- A business routinely created and maintained the records
- A photograph fairly and accurately depicts a scene
- A video came from a specified camera system
- A text-message account belonged to a particular person
- A document was kept in the regular course of business
Business records may sometimes be supported through a custodian’s affidavit or testimony, but the specific requirements and deadlines should be reviewed for the case. A screenshot alone may not answer questions about whether the information was complete, altered, or taken out of context.
What is spoliation, and why does it matter?
Spoliation is the destruction, alteration, or loss of relevant evidence after a duty to preserve it has arisen. Courts may consider the reason for the loss, whether the evidence could have been preserved, and whether the opposing party was harmed.
Possible consequences can include orders requiring additional discovery, limitations on evidence, monetary sanctions, or instructions concerning missing evidence. The result depends on the circumstances and the applicable court rules.
Do not delete messages, discard records, replace a damaged item, or instruct employees to “clean up” files after a dispute becomes foreseeable. If evidence was accidentally lost, document what happened promptly, including the date, device, system, file, and any efforts made to recover it.
What should residents do before filing or responding to a claim?
Start with a factual timeline. Identify the event, the people involved, important communications, financial effects, and the location of each relevant record. Keep opinions and speculation separate from factual notes.
Preserve evidence in its original form, maintain organized copies, and avoid posting about the dispute online. Public posts can become evidence themselves and may reveal private information or undermine a later position.
Legal deadlines, discovery obligations, privilege issues, and preservation duties can vary by case. When a dispute involves serious injury, substantial financial loss, confidential business information, or evidence that may disappear quickly, careful legal guidance may be necessary to avoid accidental waiver or spoliation.