A plaintiff may demonstrate the adverse action element by successfully proving they were constructively discharged. See Levesque v. Androscoggin County, 2012 ME 114 ¶ 8 (constructive discharge found when an employee's “working conditions were so difficult or unpleasant that a reasonable person in [the employee's] shoes would have felt compelled to resign”). There is no real dispute that the relationship between Plaintiff and Mr. Palmer was tense and rife with conflict in the weeks leading to Plaintiff’s medical leave in January 2015.