Yes, a workshop can have only one mechanic. While many workshops employ multiple mechanics, it is also possible for a small workshop to have just one mechanic who handles all the repairs and maintenance tasks. However, having only one mechanic may limit the capacity and capabilities of the workshop, as it can restrict the number of cars that can be serviced simultaneously and the range of expertise available. Additionally, having one mechanic may result in longer waiting times for customers if the workload becomes overwhelming.