Excerpt: A number of large corporations - Walt Disney Co., Harrah's Entertainment, Dow Chemical Co., Toyota Motor Corp., Pitney Bowes Inc. - offer on-site clinics as a way to improve their employees' health, cut medical costs and reduce the amount of time workers spend out of the office for doctor appointments. Intel Corp., based in Santa Clara, is trying out a medical clinic at its Arizona campus. Virtually all large employers are self-insured, meaning they pay for medical care themselves and can reap the benefits of a healthier employee population.  MORE >>