The phrase "am derelict" means that someone is neglectful or failing in their duties or obligations. There are several antonyms to this phrase that describe someone who is responsible, diligent, and committed to their work. These words include conscientious, punctilious, dedicated, diligent, and industrious. A conscientious worker is someone who is diligent and takes great care in their duties. Similarly, a punctilious worker is someone who pays great attention to detail, while a dedicated worker focuses entirely on their responsibilities. An industrious worker is someone who works hard and dutifully, while a diligent worker is someone who is focused and persevering in their efforts to achieve. All these words describe people who are reliable and conscientious in their work responsibilities.