India's 1.1 million-strong army and paramilitary forces has recorded an annual average of 100 suicides in recent years, mainly due to stress, mental health problems and other personal issues. The purpose of the study was to compare Occupational Stress, Frustration Tolerance and Mental Health among BSF, PAC and CISF.For this study, one fifty male subordinate officers and other personnel of different rank categories (Sepoy to Sub Inspector) from each force of various battalions and places were randomly selected as a subject and the age of the subjects were ranging from 19-24 years. All the subjects belonged to different states and union territories of India and all the subjects had a minimum of three years job experience.The qualitative measurement of each subjects were taken with the help of Occupational Stress Index (OSI), Frustration Tolerance (FRTO) Inventory and Mental Health Battery (MHB). In order to ascertain significance of difference among the three groups the analysis of variance was employed and the level of significance was set at 0.5.