JesichasHope
Depends on where you live.
Look for a natural doctor that is also and MD. Employers are more likely to take this paperwork from someone with an MD license.
It will depend on how long you plan to be out of work. A lot of natural treatments allow you to work; unless you are traveling to somewhere to get the treatment and in that case any employer should have no problem. If you are so ill that you need time off, any employer should give you that time, hard not to expect a cancer patient to work if they cannot.
Hope we can help you out. If you need an advocate or support you can go to our site and request help. jesichashope.org - just email us with details and we will try to help you.
Hope to you.