Data from the National Statistics Office stated that the problems in the work environment. There are problems in the manner in most work since 2553-25571 and in international organizations, including The Center for Disease Control (CDC) 13 found that the United States of America. The statistics of disease, skeletal muscles and bones from working the holidays in all occupational groups in the years 2003 - 2007 were in agriculture, forestry, fishing and hunting. There is ranked 11th birth rate was 34.6 per 10,000 full-time workers, and in the years 2003 to 2007 show that during the years 2006 and 2007 has increased by 13.5 percent.
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