17 July 2012
it depends entirely on the firm, sometimes it allowed. Most firms however take a holistic view and give u 3+ month leave for ur exam, so its not so much of a worry.
22 July 2012
In Big 4 entry time is fixed and exit time is not fixed and excess working word is not there in the dictionary of Big 4. As stated by Aneket he is correct sometime it is allowed based on performance and output given by the concerned person.