Organizations require the services of ERP systems to keep pace with rapidly changing business environment. However, for successful implementation of ERP systems in any organization "users' willingness" for adoption remains crucial. This book discusses the impacts of User Willingness to ERP System implementation with SMEs in Sri Lanka. It attempts to enhance knowledge in the field of ERP System implementation in SMEs with the objective to decipher the impact of user characteristics and organizational characteristics on user resistance to ERP system implementations.