The antonyms for the word "nonperformers" include competent, effective, proficient, productive, reliable, skilled, successful, and talented. These words describe individuals who are capable and efficient in accomplishing their tasks and goals. Unlike nonperformers, competent workers consistently deliver high-quality results and meet their performance objectives. Effective employees have the ability to produce desired outcomes while utilizing available resources. Similarly, proficient workers are highly skilled and knowledgeable in their area of expertise. Reliable employees consistently demonstrate a strong work ethic, dependability, and responsibility. Successful individuals have achieved their goals and have obtained recognition for their accomplishments. Lastly, talented workers possess innate abilities, skills, and creativity that enable them to excel in their field.