(Olympia, WA)  --  An effort is underway to have Washington's statewide minimum wage raised incrementally to 13-dollars-50-cents an hour from the current minimum of nine-47.  A coalition led by labor unions has filed an initiative, which would also allow workers to earn paid sick leave.  Under the initiative, the hourly minimum would rise to eleven dollars in 2017 and reach 13-50 by 2020.  The coalition has until July 8th to gather more than 246-thousand valid signatures in order to qualify the initiative for the November ballot.