English term or phrase: Employee opinion survey

Explanation:

company ke bare me karmachariyon ke vichar janne ke liye kiya janewala sarvekshan or company ke bare me karmachariyon ke vichar janne ke liye kiya gaya sarvekshan (as the case may be)

As you wanted something different than the usual vocabulary (and which Arun Singh has already suggested), this could be an option to consider, although I doubt whether you would want to use such a long title.

Hindi Translation:

कर्मचारी राय सर्वेक