There are certain basic ergonomic guidelines that may help an employee avoid back pain or back injury:
Develop a job description based on the forces present in a particular work environment, the time spent performing the task and the biomechanics (which define human motions and seated posture in an office chair) used in the task.
Use body posture as a tool that can be changed to meet the job demands with minimum stress on the muscles, ligaments, bones and joints.
Learn and use appropriate body mechanics to limit extra mechanical stress in completing the task.
Maintain fitness and flexibility and develop a reserve of strength.