I think your issue is two-fold. You need a measure for organizational commitment and other potentially relevant demographic or 'control' variables (pay, working hours, etc.).

Second, you need a way to assess the diversity within that particular work group or organisation. So you would need to establish the languages spoken in that environment. Based on that, you could then come up with a measure for linguistic diversity.

In similar work on diversity in sports teams (using nationality as a basis) I used measures like Richness, or number of nationalities on a team, the Gini-Simpson Index and Shannon’s Entropy to calculate diversity.

Some researchers in sports have also adopted 'Linguistic distance' to account for how close different languages are together (e.g. Danish and Swedish versus, say, French and Chinese). Could be an interesting approach.

Hope that helps!

There are several measurement scales and questionnaires that can be used to assess the impact of linguistic diversity on organizational variables such as organizational commitment. Here are a few options you can consider:

To adapt these scales specifically for measuring the impact of linguistic diversity on organizational commitment among foreign employees, you can modify the language-related items or add specific items related to the experience of linguistic diversity within the organization.

It is important to note that while existing scales can provide a starting point, you may need to tailor them or develop your own questionnaire to address the specific research objectives and context of your study. This can involve incorporating items that capture the unique experiences of foreign employees and their perceptions of linguistic diversity within the organization.

Additionally, consider conducting a thorough literature review to identify any existing scales or questionnaires that have been used in similar studies or explore the possibility of collaborating with experts or researchers in the field who have experience in measuring linguistic diversity and organizational commitment.

Remember to ensure the reliability and validity of your measurement instrument through pilot testing, statistical analysis, and adhering to rigorous research methodology practices.