A Whitehorse man has been found guilty of sexually harassing a high school teenager with text messages.

Devon Hanson filed the complaint in 2010 when she was 18, alleging her basketball coach and part-time boss, Mark Hureau was sexually harassing her with unwanted texts and emails. He was 43.

The two exchanged hundreds of messages.

While there is no evidence of physical misconduct, the adjudicators say Hureau's behaviour does constitute a mild form of sexual harassment.

With a 25 year age difference, they added that Hureau should have known better; and that he failed to recognize Hanson's immaturity or the implications of the power imbalance between them.

As for a remedy, the board acknowledges that both parties have already been significantly affected by the media attention.

They've ruled their finding of discrimination is enough punishment for Hureau, and say it is a cautionary example to other Yukoners.