There are different things you may need to think about when making decisions about work. The most important one is usually how your treatment will affect you. But your finances may also be an important factor.
You need to know how your treatment is likely to affect your ability to work. Your cancer doctor, nurse or other healthcare professionals will give you information and tell you what to expect. Let them know what your job involves so you can talk about any particular difficulties.
You may also need to talk things over with a partner, if you have one, your family or close friends.