SEATAC, Wash. - One of Washington state's fastest-growing labor unions kicks off its annual convention today in SeaTac. SEIU Healthcare 775 represents 43,000 caregivers who work in people's homes and in nursing care facilities. It's the union's tenth year in the Northwest, and convention attendees will celebrate gaining better wages, paid time off and health insurance in the last decade. (contd.)  Podcast and entire story available: http://www.newsservice.org/index.php