The short answer
What Illinois families should know.
Illinois Rule of Evidence 406 recognizes evidence of a person’s habit or an organization’s routine practice as relevant to conduct on a particular occasion. The useful question is whether a specific, recurring practice supports an inference about the event at issue. A general description such as careless or generous is a different kind of assertion.
Define the routine precisely
Describe the repeated situation and response. For example, evidence about how a business routinely records a particular transaction may help explain its records. A vague statement that someone always handles finances badly supplies much less information. Counsel should identify the practice, who observed it, and the circumstances in which it occurred. Precision allows the judge to assess the proposed inference.
Distinguish habit from proof of the event itself
A routine may support an inference, but it does not necessarily establish every fact about the disputed occasion. A calendar, message, receipt, or direct witness may provide more specific evidence. Where those materials conflict, the court must evaluate the record as a whole. Habit should not be used as a substitute for collecting available evidence about the actual date in dispute.
Organizations have routines too
An employer, school, or financial institution may follow standard procedures that help explain a record or communication. A qualified witness can describe those practices and their limits. The foundation should distinguish an official policy from what actually happens in practice. An organization’s written manual does not automatically prove that every employee followed the procedure on every occasion.
Use the inference carefully
Rule 406 permits habit evidence whether or not corroborated and regardless of eyewitnesses, but other evidentiary questions can remain. Relevance, personal knowledge, and the reliability of the claimed practice still deserve attention. Avoid absolute language when the witness knows only a few examples. A candid description of the frequency and circumstances is more useful than claiming perfect consistency that the records do not support.
Prepare
Useful next steps
- Identify the recurring situation and the specific response.
- Collect available records showing frequency and exceptions.
- Identify a witness who knows the routine from direct experience.
Avoid
Common missteps
- Calling a broad character trait a habit.
- Ignoring direct evidence that contradicts the proposed inference.
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This article provides general information and is not legal advice. Laws, court rules, local procedures, and individual facts can change the analysis. Reading it or contacting the firm does not create an attorney-client relationship.