When a worker appears in our dreams, then such dream reveals that something exists in our lives that has e very important message which must be read carefully. Perhaps it has something to do with our jobs in waking lives. The most unfavorable explanation is for sailors and fishermen because they work at sea level. The dream shows that these men will have to face the harsh times, because of being away from their loved ones and family. The most favorable explanation of the dream goes to the farmers, gardeners and other workers in the fields and valleys. For pastoralists and farmers working on the slopes of the mountain the explanation of the dream is the same one. Consider that different qualifications of the workers have different meanings. If you are a shop assistant in your waking life and dream about being one, then such dream is simply a reflection of your waking life. The work you do in the dream, but do not do in your waking life is interpreted as the sign for necessity in doing some special job, otherwise you will not fulfill yours and other peoples expectations.
Read more about dreaming of Work, worker in other dream meanings interpretations.