The purpose of this study is to determine if an internet-based intervention will be effective in improving the lifestyle and weight of an obese employee population.

The intervention will last 12 months, and includes a weight tracker, a food intake tracker, an activity tracker, a calorie balance tool, an electronic discussion board, and electronic greeting cards.

The study will compare two groups over time, one of which will utilize the electronic tools, and one of which will not. The samples will be drawn from the employees of a metro-Milwaukee hospital, and will consist of obese (Body Mass Index, or BMI, of 30 or greater) employees only.

The primary outcome will be change in weight over the study time period as measured by the BMI. Secondary outcome measures will include quality of life, blood pressure, tests of blood sugar, cholesterol, presence of depression, lifestyle wellness score, health care costs and productivity.

Inclusion Criteria:

• Obesity as defined by a BMI of 30 or greater
• The ability to speak and understand english
• Health insurance coverage through First Health (Aurora's employee insurance plan)
• Not currently on another formal weight management program
• Not currently taking any weight loss medications
• Not currently disabled in such a way that participation would be precluded