In the present study an attempt has been made to measure the occupational stress of secondary school teachers of district Mandi in Himachal Pradesh. A sample pool of 200 secondary school teachers from the government schools was randomly taken. The relevant information from the sampled subjects were collected through the standardize Occupational Stress Index. It was found that the secondary school teachers generally had occupational stress having high, moderate and low levels. Further significant differences were found in the occupational stress of male and female secondary school teachers.