Hi Sree
Besides the links provided by my colleagues..also would recommend you to read the book HR audit by Dr T V Rao.
Methodologies involved are:-
* Interviews with CEO, Top Managers & section of others in a structured questioniare.
* Observation - Any Scientists/Top Notch performer would tell you that observation is the key to identifying problems & providing solutions.
*Review of forms,formats,reports & manual.
*HRD Audit questionaire spanning all HR processes.
Let me share my two cent's thoughts on the HR Audit:-
HR audit is no different from other audits like Accounts & Finance which is a internal statutory mandated. Audit's purpose is to check the shortcoming of the processes & suggest the ways to plug the loopholes.
Lot of times..it's just common sense..to align the same to Business Processes..afterall it is the job of HR Manager to be in constant touch with the employees and be aware of HR systems,tools & interventions that can keep their motivation and commitment levels high.
Cheers,
Rajat Joshi