Bonnerup and Hasselager was established in 2011. The cooperation has grown steadily over the years and has evolved through writing literature , solving consultancy , training in Master in Organisational Psychology and especially sparring and professional opponent in problem solving. i Organisationspsykologi og ikke mindst sparring og fagligt modspil i løsning af opgaver.

From 2012 cooperation formalized through the establishment of " Bonnerup and Hasselager Organisational Psychology".