Getting back to work sooner rather than later will help most people with mild back pain. This will help your back pain itself, as staying active and keeping the back muscles moving will help you get better sooner. It will also make you feel better about yourself. Bed rest does more harm than good.
You don’t need to wait until your back problem has completely gone. In many cases, the longer you are off work the more likely you are to develop longer-term problems and the less likely you are to return to work.
Keep in contact with your employer and discuss what can be done to help you return to work. If your work involves heavy lifting or other physically demanding tasks, you may need to do lighter duties and fewer hours for a while. If your work involves seating a chair for a long period, it may help to seat on a pressure-relieving cushion like this cushion.
The cushion is available on the following link: https://www.amazon.co.uk/Products-Innova-Orthopedic-Cushion-Removable/dp/B07Q6RVPXB/ref=sr_1_20?dchild=1&keywords=coccyx+seat+cushion&qid=1609760020&sr=8-20
If you have an occupational health advisor through your job, they can help advise what work you are fit to do and arrange any simple adjustments to your work or workplace to help you to cope and stay at work.