Per Washington Administrative Code (WAC) Section 388-03-160 Section (2):
If you have been certified or authorized as an interpreter or translator and are not a department employee, you can maintain your certification or authorization status by:
(a) Earning a minimum of twenty credit hours of DSHS approved continuing education (CE) every four years, of which at least one credit hour per year must be in ethics training. A current list of DSHS recognized continuing education and/or professional development courses is published on the LTC website; or
(b) Retake the examination within four years from the date you were certified/authorized if you do not earn a minimum of twenty credit hours of DSHS recognized continuing education during this time frame. Once you pass all test requirements, a new certificate or authorization letter will be issued to you with a new expiration date.
One ethics credit should be earned per calendar year of your four-year credential cycle. You must complete each credit on time. If you miss an ethics credit, you won't be able to make it up.