June 19, 2025

Poor Performance: How to Gather Evidence

by Our content team
West Midlands Police / Flickr
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When a team member’s performance, conduct or attendance falls short of expectation, it has to be addressed. However, before you speak to the employee in question, you must prepare yourself by gathering evidence of the problem. Addressing poor performance is never easy, but having evidence to hand to help you to explain the problems will make the process far easier and will allow you to counter any opposition from the employee.

When addressing problems with performance, it is important not to prejudge the situation. Presenting evidence as factually based examples will help you to avoid placing your own interpretation on the issue, which in turn will help you to approach the meeting objectively, dispassionately and professionally.

Types of Evidence

Evidence can take many forms, but not all forms of evidence have equal value.

  • Documentary evidence consists of paperwork or electronic recordings such as video or audio, for example, a timesheet or CCTV footage.
  • Physical evidence consists of actual objects or things – for example, if the employee had incorrectly assembled a set of components, this might be shown as physical evidence.
  • Testimony takes the form of statements from witnesses who have observed what the employee has done or failed to do.
  • Hearsay evidence is information that has been reported to you by a third party.

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