Light-headedness is a condition in which an individual may feel dizzy or about to faint and it often goes away or improves when one lies down. For the question above, you should respond by having your coworker sit down in a cool area, and drink plenty of cold water.
Explanation:
Since my coworker is standing for a long time monitoring a production line in the factory where it is hot and noisy, so he might be tired and dehydrated. So he feel slight headed, meaning he feels weak and is about to faint. My immediate respond to him is to make him sit in a cool and silent place where I will provide him plenty of water to drink and also asked him to take rest for a while.
