Washington State Unemployment Insurance
General administration:
Employment Security Department
Employment Security Building
212 Maple Park Drive
Olympia, WA 98504-9046
360-902-9500
Register as employer by filing Form BLS-700-028
(Master Business Application):
Master License Services
Department of Licensing
PO Box 9034
Olympia, WA 98507-9034
360-664-1400
Report quarterly hours by filing Form F22-055-111
(Employer's Quarterly Report of Hours for Industrial
Insurance) by last day of month following end of
quarter:
Department of Labor and Industries
Employer Services
PO Box 44835
Olympia, WA 98504-4835
Report quarterly wages and contributions by filing
Form EMS 5208 (Employer's Quarterly Report of
Employee's Wages and Employer's Quarterly Tax Report)
by last day of month following end of quarter:
Employment Security Department
PO Box 34188
Seattle, WA 98124-1188
SUI experience rating formula, base, and rates
Benefit ratio formula
Wage base is
$35,700 for 2009 and $36,800 for 2010
Contribution rate Schedule C:
Rates range from
0.00% to 5.4%
New employers use average industry tax rate, but not
less than 1.0%.
