Wider employee engagement depends on knowing its current width.
The width could be measured, for example, by the proportion of employees making the suggested improvements from:
- Core process
- Support process
- Supervisors, managers, operators, admin staff
- New employees (within first year)
- 10, 20, 30 years with the company.
...etc
Instead of waiting for employee exit interviews I would measure the proportion of employees suggesting:
A. Business ideas
B. System improvements
C. Process improvements
D. Future opportunities
....etc
The rate and value of these suggestions could also be measured.
Engagement may also be measured by the numbers volunteering for auditor training (unsuitable candidates may be more suited to first aid training), the number engaged in problem prevention and the number engaged in problem solving.
All depending on what the business needs.