Contact information for businesses
File quarterly unemployment taxes
Pay quarterly unemployment taxes
- Online
- Mail: Employment Security Department, P.O. Box 34467, Seattle, WA 98124
Mail monthly billing statement payments to:
P.O. Box 34949, Seattle, WA 98124-1949
Mail paper tax-filing documents to:
P.O. Box 34729, Seattle, WA 98124-1729
Send certified-mail payments to:
105 14th Ave, Suite 300, Seattle, WA 98122
Get technical support for UIFastTax, UIWebTax and ICESA
- 800-565-4660
Information about your tax account (employer help line)
- 888-836-1900, TTY 800-833-6388
- At your local district tax office
General tax information and forms
- 888-836-1900, TTY 800-833-6388
- Mailing addresses and fax numbers
For questions regarding a specific benefits claim, call the employer helpline at 877-504-5607.
Information about your tax rate and or penalties, call 888-836-1900, TTY 800-833-6388.
- From your local tax office
- Mail: Employment Security Department, Experience Rating/Benefits Charging Unit,
- P.O. Box 9046,Olympia, WA 98507
- Mailing addresses and fax numbers for employers regarding employee-benefit claims
Find your local tax office
Sign up for e-mail reminders and information
Information about the federal Work Opportunity Tax Credit
- Online
- 800-669-9271
Information for new businesses
- Online
- 360-902-9360
Labor statistics
- 800-215-1617
Governor’s Committee on Disability Issues and Employment
- 360-438-3168, TTY 360-438-3167
Information about avoiding layoffs
- 800-752-2500
- Fax: 360-586-5601 or 360-586-5602
Assistance with layoffs
- 360-725-9517, 360-725-9518
Report a layoff to the Dislocated-Worker Unit
- 360-725-9500
- Fax: 360-586-3739
List job openings / find job candidates through WorkSource
Report tax cheaters
- Online
- 866-266-1987, 360-902-9450
Report unemployment-benefits cheaters
- Online
- 866-266-1987, option 2
- Fax: 360-407-3377
- Mail: Office of Special Investigations, P.O. Box 9046, Olympia, WA 98507
