Except for services subject to RCW 50.44.010, 50.44.020, 50.44.030, or 50.50.010, the term "employment" shall not include services performed by amateur sports officials, on a contest-by-contest basis, for interscholastic and youth or adult recreational sports contests. For purposes of this section, "amateur sports official" means any person who serves as a neutral participant in any sports contest where the players are not compensated, including but not limited to, an umpire, referee, judge, linesperson, scorekeeper, timekeeper, or organizer, and who is not otherwise employed by the sponsor of the sports contest.
RCW 50.04.246