To evaluate the quality of work by a Laravel developer, you can consider several factors. Firstly, review their portfolio and past projects to assess the level of complexity, functionality, and user experience. Secondly, look for testimonials and reviews from previous clients to gauge their satisfaction with the developer's work. Thirdly, assess the developer's communication skills, responsiveness, and ability to understand your project requirements. Fourthly, evaluate the developer's understanding of Laravel frameworks and related technologies. Fifthly, examine their coding practices, such as readability, scalability, and performance. Finally, consider the developer's ability to provide ongoing maintenance and support services. By considering these factors, you can effectively evaluate the quality of work by a Laravel developer.