Being able to communicate in English is a vital skill to have in the world of work. As an English speaker, you can often benefit from higher salaries in countries where English is not the first language. Additionally, with English skills, you have a better chance of having an international career.
If you wish to work in an English speaking environment, you will need to expand your vocabulary and understand some words and phrases that relate to the workplace. Even if you feel comfortable communicating in English during daily life and social situations, you may struggle with some workplace language.