How to get in contact with HR managers of different organizations to get permission to collect data from employees. As due to the current situation I was a research scholar am facing many issues regarding data collection, while connecting people through LinkedIn most of the time employee's reply is like our company doesn't allow this. So is there any way I could get in touch with HR managers and from there my questionnaire could be shared among their organization employees? I tried to get in touch through LinkedIn but it doesn't work.