Certain factors may increase your risk of working during your pregnancy. If your job includes two or more of the following conditions, talk to your doctor:
 | prolonged standing (more than 3 hours a day) |
| work on an industrial machine, especially if it vibrates a great deal or requires strenuous effort to operate |
| strenuous physical tasks, such as heavy lifting or heavy cleaning |
| repetitious, tedious work, such as assembly-line jobs |
| environmental factors, such as high noise levels or extreme temperatures |
| long working hours |
| shift changes |
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