One way to address client concerns about the accuracy of labor quotes is to be transparent about the assumptions and estimates used to calculate the quote. Clearly explain the project scope, the estimated time required, and the hourly labor rates involved. Additionally, it can be helpful to provide references or case studies that demonstrate past success in delivering accurate labor quotes. Regularly communicating with clients throughout the project and promptly addressing any changes or issues can help build trust and confidence in the accuracy of the labor quote.