The clergy ( 牧师 ) , firefighters and others with professional jobs that involve helping or serving people are more satisfied with their work, and are happier than those in other professions, according to results from a national survey. “The most satisfying jobs are mostly professions, especially those involving caring for, teaching and protecting others,” said Tom Smith, director of the General Social Survey at the National Opinion Research Center at the University of Chicago. In the study, interview er s asked more than 27,000 people questions about job satisfaction and general happiness. Individuals’ level of contentment affects their overall sense of happiness, Smith said. 47% of those surveyed said that they were satisfied with their jobs and 33% reported being very happy. Here are the top five most satisfying jobs and the percentage of subjects who said they were satisfied with the job. 1. Clergy---87% 2. Firefighters---80% 3. Physical therapists---78% 4. Authors---74% 5. Special education teachers---70% “The least satisfying jobs are mostly low-skilled and service occupations, especially involving customer service and food serving,” Smith said.