Final answer:
A seller of labor can reassure a possible employer faced with imperfect information by providing verifiable information about their education and work experience, such as degrees and certifications from reputable schools, awards, and references from previous employers.
Step-by-step explanation:
When faced with imperfect information, a seller of labor can reassure a possible employer by providing verifiable information about their educational background and work experience. This can include presenting degrees and certifications from reputable trade schools and colleges, as well as showcasing awards, a high grade point average, and other accolades that demonstrate hard work and ability. Additionally, the seller of labor can provide references from previous employers, which can offer insights into key attributes such as energy level and work ethic.