First comes the stress - from layoffs and fear of layoffs - then the vegging out at home in front of the TV. And when pink slips are circulating, the vending machines at work run out of snacks highest in fats and calories. Those are findings from a study of the effects of chronic job stress and lack of physical activity on nearly 2,800 employees at a large manufacturing facility in upstate New York. Researchers from the University of Rochester Medical Center said that the circumstances apply to almost any job situation in which layoffs or lack of control at work is a major concern. They found that 72 to 75 percent of the employees they studied were overweight or obese. Most were middle-aged, white, college-educated (some with advanced degrees), earned more than $60,000 per year and averaged almost 22 years in their jobs. More than 65 percent of the employees reported watching two or more hours of TV daily and of these individuals 77 percent were more likely to be overweight or obese. The solution? The researchers suggested improved corporate policies to better protect employee health. And, of course, exercise.