Are there any effective ways to reduce the Health insurance costs?

We have been under trmendous pressure to reduce costs because of many reasons like market scenario,Competition, Gross Margins etc.
The one big ticket items that can fetch significant savings is Health Insurance costs.
Every year the claim ratios are rising resulting in the Health insurance providers asking for higer premium for same services.

Organizations have tried and are trying various measures like reducing the cover, introduction of co pay, fixing the limits etc.

Will any of the above measures gives a long term effective solution?

It has been proven through many studies that the best way to control your Health insurance costs is to invest in a corporate wellness program.
The Corporate wellness program once implemented effectively will yield better sustainbale results over a period of 2-3 years.