Employee Involvement On Project Quesionnaire

Often it is seen that the involvement of employees towards a set questionnaire is less valid when it is from any student doing it as a part of their project.
This might be because 1) Employees are too busy. 2) Employees consider it not a part of their burden OR 3) Questionnaire are not motivating enough to participate.
How can we make the questionnaire motivating and participative for employees ?

Please give more details about yourself and why you have raised that question.

I am in my final year of MBA and finding it difficult to get a valid or true information on the questionnaire and about what they really think about the same. Would like to make the questionnaire session more exciting and motivational.

Sorry to keep asking questions; you have not said where you are doing/going to conduct the survey and in which mode. More the information that you can give, more precise will be the help you get.

I am doing my summer internship project 'Aspect Technologies Ltd, Bangalore, India'. It is an IT industry (MNC). The survey i will conducting is by distributing a hard copy of a questionnaire designed on the topic Recruitment and Selection. The sample size for my survey is 50 employees.
warm regards
Poonacha
MBA (HR)