The Velvet Glove By Harry Harrison

Despite the Robot Equality Act, being a robot is tough. Jon Venex, a robot designed for work on Venus, needed a job bad or it could mean the scrap heap. When he found a job listing for Venex robot, it sounded too good to be true. And when you're a second-class citizen, like a robot, it usually is. He soon finds himself embroiled in a scheme with underground crime—literally and figuratively!