Complex sentence: Dead-end jobs are not limited to menial retail or fast food roles; professional positions in call centers, loss-mitigation underwriting, administrative and clerical work often trap the workers in jobs that offer almost no advancement potential.
Split into simpler sentences: Dead-end jobs are not limited to menial labor, retail or fast food roles. Professional positions in call centers, loss-mitigation underwriting, administrative and clerical work may offer almost no advancement potential.