1000 Words Vocabulary having most efficient words which you use in advanced english speaking

Intermediate & advanced English learners
Speakers of English as a 2nd language
Immigrants in English Speaking countries
Native English speakers seeking to expand their vocabulary

Productivity is heavily affected by communication skills. If you employ non-native English speakers, you can encourage them to use 1000 Words Vocabulary in a daily personal development routine to improve their vocabulary

This will benefit the efficiency of the entire organisation, not just them personally. You can also set annual PDP goals for them and ask to see their activity report on 1000 Words Vocabulary.