Original text - English - Work under a hot climate can cause some ...

The English original here is very strange. Here's my attempt to "translate" it into normal English:

Work under a hot climate can cause some effects in relation to the elevated temperature, which can be dangerous to people and put a person's life in jeopardy if not treated.
The whole personnel must be capable of recognizing the signs and the symptoms and be able to administer first aid.
Prevention:
- all persons working in the field must consume a minimum of three liters of drinking water per day,