Think stress at work is just “part of the job” and the cost of doing business? Tell that to your heart, because a new study has found that chronic job stress may be bad for your ticker.

A 12-year British study found that workers with long-term job stress were 68 percent more likely than those who claimed to be without stress to die of heart disease, have a non-fatal heart attack or develop angina (chest pain or discomfort as a result of the heart not getting enough blood).

The researchers found that many of the stressed-out workers tended to have unhealthy diets or be physically inactive. Study participants rated “stressful jobs” as those that had a lot of pressure or where they had little control over their work. Participants also listed social stress, such as difficult bosses or unsupportive coworkers, as additional stress-inducing factors.

For African-American men and women, who are disproportionately affected by heart disease, it’s particularly important to tackle on-the-job stress. Setting aside time to exercise, healthy diet changes and meditation are all tranquil tricks.