National Defence - Canada.ca

First time visit: View without clicking anything

Intellectual property and copyright - Canada.ca

Workplace standards - Canada.ca

Jobs and the workplace - Canada.ca

Student aid and education planning - Canada.ca

Business and industry - Canada.ca

Family benefits - Canada.ca

R&D and innovation - Canada.ca

Hiring and managing employees - Canada.ca

All `id` attributes on a page must be unique, or accessible technologies used by the page 
can stop working.

## Example

The duplicate `id` here makes it unclear which label belongs to which input field:

```html
<label for="name">Your name</label>
<input id="name">

<label for="name">Company name</label>
<input id="name">
```

As a result, accessible technologies like screen readers can fail to read out the 
correct text, or may read out no text at all.

Similar issues can occur when using `aria-labelledby` and `aria-describedby`.

## How to fix

Ensure all `id` attributes on a page are unique. 

## More information

See [Technique H93](https://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/H93) 
for more information.

duplicate-id

January 2026

December 2025

National Defence

Title / URL	Issues
National Defence - Canada.cawww.canada.ca/en/department-national-defence.html	6
First time visit: View without clicking anythingwww.canada.ca/en/department-national-defence.html	6
Intellectual property and copyright - Canada.cawww.canada.ca/en/services/business/ip.html	2
Workplace standards - Canada.cawww.canada.ca/en/services/jobs/workplace.html	2
Jobs and the workplace - Canada.cawww.canada.ca/en/services/jobs.html	2
Student aid and education planning - Canada.cawww.canada.ca/en/services/benefits/education.html	2
Business and industry - Canada.cawww.canada.ca/en/services/business.html	2
Family benefits - Canada.cawww.canada.ca/en/services/benefits/family.html	2
R&D and innovation - Canada.cawww.canada.ca/en/services/science/innovation.html	2
Hiring and managing employees - Canada.cawww.canada.ca/en/services/business/hire.html	2

Fix duplicate IDs

National Defence

Where this issue has occurred