Dissertations / About employees? - Need hr research topic for Ph.d. [3]

i have done my mba from an istitution where they have not taught us properly (sorry for saying about the institute,its a fact),so i decided atleast i will do my further studies from reputed institute. i need to know which topics are hot currently for research in human research (do not blame that i do not know even that,its not my fault,from very rural background)i was thinking of "spirituality can boost the performance of the work of employees" or "making employees feel home at the organization to increase the efficiency"," initial,middle,final stages of employee attitude in the organization that effect the organization "