Below are some participation strategies and tactics that you could adopt:
Develop a robust internal communications plan leading up to, during, and after the pulse closes. Leverage different channels, such as employee newsletters, intranet, meetings, etc.
Delegate the responsibility of driving participation to department heads and managers. The increased impact is seen when department heads check in with managers with low participation rates and get them to encourage participation during team meetings.
Generate friendly competition through incentives. For example, offering a pizza party for the top 3 departments.