Final answer:
Jackson Pollock, renowned for his drip painting technique, worked as a janitor before becoming famous. He also created murals for the WPA and was influenced by his wife, artist Lee Krasner.
Step-by-step explanation:
Jackson Pollock was a significant figure in the American art movement known as Abstract Expressionism. He is best known for his unique style of drip painting, whereby he would create his art by dripping and splashing paint onto a canvas. Prior to this innovation and his subsequent rise to fame, Pollock held a job as a janitor which he maintained while he built his career as an artist. During the 1930s, he worked for the Works Progress Administration (WPA), where he was involved in creating murals and being exposed to the radical art movements that would shape his own artistic approach. His wife, Lee Krasner, also an artist, played a significant role in his career development, influencing his work and providing support through their tumultuous relationship.