Jan Hasselman

Senior Attorney Northwest Office


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Elizabeth Manning
Public Affairs and Communications Strategist

Bar Admissions


Jan Hasselman is a senior attorney with Earthjustice’s Northwest office in Seattle, WA, which he joined in 1998.

Since that time, he has successfully litigated a number of regional and national issues including listings of salmon under the Endangered Species Act, stormwater pollution, coal fired power plants, and coal and crude oil terminals. He served as lead counsel to the Standing Rock Sioux Tribe in their litigation against the Army Corps of Engineers regarding approval of the Dakota Access pipeline.

Jan has a history degree from Wesleyan University, and graduated magna cum laude from Boston College Law School, where he was executive editor of the Boston College Environmental Affairs Law Review.

Prior to joining Earthjustice, he served as a judicial law clerk in the federal district court in Boston. He is an adjunct faculty member at the University of Washington and Seattle University law schools, and in 2013 was a visiting professor at the Faculty of Law of the University of Ljubljana (Slovenia) under a Fulbright grant.

The Latest by Jan Hasselman

A family prepares a meal on an induction stove.
April 19, 2023

One Court Ruling Will Not Stop the Growing Building Electrification Movement

Plenty of legal options remain for communities to protect health and safety – and achieve crucial zero emissions goals – by transitioning buildings away from fossil fuels
An offshore production oil rig.
May 3, 2022

Inside the 'Climate Test'

Challenging the suspect math that lets fossil-fuel companies off the hook for locking in greenhouse gas emissions
Earthjustice attorney Jan Hasselman
August 21, 2018

Fighting Fossil Fuels in the Era of Trump

Four ways to make progress on clean energy now.
Earthjustice attorney Jan Hasselman tours the Atchafalaya Basin with clients, seeing the impacts of oil pipelines to the area.
April 6, 2018

The Next Battle in the Fight to Stop Dirty Pipelines

Earthjustice and its clients won a huge victory when a federal judge shut down the Bayou Bridge pipeline in Louisiana; a federal appeals court will decide what comes next.
Lummi members hold a symbolic check burning protest to demonstrate that no amount of money can buy their support.
July 14, 2015

A New Front in the Battle Against Coal Exports: Treaties

Native American tribes in the Pacific Northwest are invoking an unusual source of legal authority—treaties—to block massive coal, crude oil and tar sands development.
Morning fog lingering on a Puget Sound beach.
July 1, 2015

Legal Action Armors Puget Sound Against Habitat Loss

The U.S. Army Corps of Engineers is shirking its duty to make sure changes to coastal habitats—including Puget Sound—won’t destroy valuable public resources.