“…One can construct shrinkage preliminary test estimators for the parameter θ based on the acceptance or rejection of H 0 . Pandey and Singh (1980), Prakash and Singh (2008), Kibria et al (2010), Ahmed et al (2012), Mirfarah and Ahmadi (2014), Arabi Belaghi et al (2014, 2015a, Naghizadeh Qomi and Barmoodeh (2015) and Hossain and Howlader (2016) considered the problem of shrinkage estimation. The aim of this paper is constructing shrinkage preliminary test estimators in exponential distribution under a precautionary loss function.…”