This study investigates the phenomenon of the lack of needed information, predominantly experienced through difficulties in human, social and industrial affairs. The key concern is, thus, to understand what really causes the lack of needed information. Answers to this concern have been provided from an array of studies mostly focused in the area of information management. However, the literature shows that there is no comprehensive a priori theory to guide an empirical investigation on this matter. Thus, the empirical investigation conducted here is based on grounded theory approach that investigates fifty cases, where the lack of needed information is clearly manifested. The empirical investigation suggests that the phenomenon of the lack of needed information seems to emerge because of diverse factors, ranging from political and cultural structures, through human individual capabilities, and ending with procedural and technological artefacts. The results present an initial outline for a possible future theory of information inadequacy.