Job Recruitment Website - Immigration policy - What part should I fill in my passport for working abroad? What are the precautions?

What part should I fill in my passport for working abroad? What are the precautions?

There is nothing to fill in the passport. Only the last page was signed by myself.

The visa says what you do. If the student is a student visa, if the job is a job or something. Immigration offices in other countries will issue you a permit based on your visa. If that country has a permit.