Rabbi Moshe Zemer is a leader in Progressive Judaism

Progressive Judaism

Progressive Judaism , is an umbrella term used by strands of Judaism which affiliate to the World Union for Progressive Judaism. They embrace pluralism, modernity, equality and social justice as core values and believe that such values are consistent with a committed Jewish life...

 who specializes in the Reform movement

Reform Judaism

Reform Judaism refers to various beliefs, practices and organizations associated with the Reform Jewish movement in North America, the United Kingdom and elsewhere. In general, it maintains that Judaism and Jewish traditions should be modernized and should be compatible with participation in the...

's approach to Jewish law (halakhah).

Zemer publishes both scholarly essays and responsa

Responsa

Responsa comprise a body of written decisions and rulings given by legal scholars in response to questions addressed to them.-In the Roman Empire:Roman law recognised responsa prudentium, i.e...

. He has co-edited a series of Jewish law anthologies with Walter Jacob

Walter Jacob

Walter Jacob is a leading Reform rabbi and an expert in the Reform movement's approach to Jewish law . A protege of Solomon Freehof, Jacob served at Rodef Shalom in Pittsburgh as an assistant rabbi and as successor to Freehof as congregational rabbi...

, an American Reform halakhist.

He has actively challenged the Israeli political and legal system to recognize Reform leaders in Israel

Israel

The State of Israel is a parliamentary republic located in the Middle East, along the eastern shore of the Mediterranean Sea...

on such matters as the authority to certify marriages.