Back pain causes many working days to be lost each year. The spine is a complex structure which supports the whole weight of the upper body and is therefore susceptible to abuse. Much back pain can be avoided by attention to lifting carefully, with knees bent and the back straight. Take care to sit as upright as possible with a support for the small of the back. Take simple pain killers, but if the pain persists for more that a few days, or goes down to your legs it may be wise to consult your doctor to see if any further treatment is possible.