One of the important reasons for the interest in green buildings is that the employees can benefit from healthy and productive work environments. This research aims to provide evidence that can affect design decisions by a literature review and an occupant survey. Three important design decisions (green certifications, ventilation types and office types) were investigated through a standard occupant survey in China. Highly rated green buildings could be effective to provide a comfortable, healthy and productive work environment. Mixed-mode ventilation (a hybrid approach to space conditioning that uses a combination of natural ventilation and mechanical systems) and high cubicles (open-plan offices with high partitions) are sensible choices for green buildings to achieve high environmental satisfactions.