Maintain a healthy weight. Staying fit is one of the most important recommendations for avoiding back pain.
Poor posture is another major contributor of back pain.
Make sure youтАЩre sitting deep enough in your chair so that your back can be supported by the back of the chair.
Your chair should be low enough to the ground so that you can rest your feet comfortably on the ground, but not so low that your knees are higher than your hips.
If you are working on computer, then set your computer monitor at eye level so that you arenтАЩt slumping to get your gaze in line with your screen.
Your forearms should be well supported on the armrests of the workstation and the armrests raised high enough that you can rest your elbows on them comfortably.