Can I work in Israel on a tourist visa?

No. Working in Israel on a tourist (B/2) entry is illegal under Israeli immigration law, regardless of whether the work is paid or unpaid. If discovered, you risk immediate deportation, a future entry ban, and potential legal consequences for your employer. Any foreign national planning to work in Israel — including remote workers employed by overseas companies but living in Israel — should obtain the appropriate authorization before beginning work. The rules on remote workers are still evolving; consult an immigration attorney if your situation involves working for a non-Israeli employer while residing in Israel.