Measures can be direct like weight loss, engagement scores, reduced blood pressure, people exercising, or inferred. Reduced medical costs, reduced absence, reduced accident rate. The level of participation is a great measure, but that needs to be real, more than visiting a website.
Wellbeing needs a culture shift, i was pleased to see some entries had seen a shift in culture, it is here that the real difference will be made. It needs leadership and commitment from the top of the organisation, and right through the management. Employees need to own it and live it. When it becomes fun its really getting there.
I am given real hope that organisations do care enough about their employees to invest in their health. The reward to business is obvious and if you are not doing it already you are losing money.