Document ID: ./input/supremecourt_opinions/opinions/22pdf/21-1449_d9eh.pdf
Page Number: 15

12 

GLACIER NORTHWEST, INC. v. TEAMSTERS 

Opinion of the Court 

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Glacier alleges that the drivers’ conduct created an emer-
gency in which it had to devise a way to offload concrete “in
a  timely  manner  to  avoid  costly  damage  to  [its]  mixer 
trucks.”  App. 72.  The Union’s actions not only resulted in
the destruction of all the concrete Glacier had prepared that
day; they also posed a risk of foreseeable, aggravated, and 
imminent harm to Glacier’s trucks.  Because the Union took 
affirmative  steps  to  endanger  Glacier’s  property  rather
than  reasonable  precautions  to  mitigate  that  risk,  the 
NLRA  does  not  arguably  protect  its  conduct.    We  reverse 
the  judgment  of  the  Washington  Supreme  Court  and  re-
mand the case for further proceedings not inconsistent with
this opinion. 

It is so ordered.