Healthy job traits…

1. [4] Autonomy/Personal Control — The more personal control people have in their lives, the less their chances of depression and heart disease and the better their health in general.
2. Mentally Demanding — If you use more brain power on your job, you’re less likely to develop Alzheimer’s disease.
3. Low Stress — Research shows that stress can contribute to problems like heart disease, headaches, chronic pain, lowered immunity, and even obesity.
4. Social — Hanson says jobs that require social interaction can lower blood pressure, decrease heart disease, prevent depression, keep you cognitively fit, reduce stress, and increase lifespan.

Source: http://blogs.techrepublic.com.com/career/?p=1026 [5]