Security guards spend most time of their herculean job working in erect position. Low back pain is a common denouement of this prolong standing. McKenzie exercises derived from McKenzie method of Mechanical Diagnosis and Therapy is a common practice in physical therapy to efficiently taper low back pain. Aim and objective:  1) To educate the participants about McKenzie exercises for low back pain. 2) To see the effectiveness of educating McKenzie exercises in reducing low back pain and disability. Procedure: For this quasi experimental study 94 security guards fulfilled the inclusion criteria. Extended Nordic Musculoskeletal Questionnaire was used to identify low back pain among the participants after taking consent. Numeric Pain Rating scale and Ronald- Morris Low back pain and disability questionnaire were incorporated to measure the initial levels of pain and disability. Education about the McKenzie exercises for low back pain was provided to the security guards in sessions along with handouts illustrating exercises. A home exercise plan was also instructed. The participants were followed for 2 weeks to measure any reduction in the level of low back pain and disability. Results: The result of the study showed a highly significant difference (P<0.0005) in the initial and final intensity of pain.  Regarding disability out of 24 items on Ronald Morris Disability Questionnaire the mean of 10 items showed significant while 4 items showed highly significant difference on the responses of participants before and after educating McKenzie exercises. Conclusion: Thus, it was concluded that McKenzie exercises are indeed effective in reducing and in some cases completely treating low back pain and disability.

Key words: Low back pain (LBP), Extended Nordic Musculoskeletal Questionnaire (NMQ-E), Numeric Pain Rating scale, Ronald- Morris Low back pain and disability questionnaire (RMQ), McKenzie exercises, McKenzie method of Mechanical Diagnosis and Therapy.