Pierce County provides an excellent choice of medical plans for eligible employees and their dependents. Unrepresented employees, and employees represented in 120J, 120W, 612S, and U612 are offered PEBB benefits. 

Most employees covered by a Collective Bargaining Agreement have a choice of medical plans offered by Washington Teamsters Welfare Trust (WTWT). WTWT offers a choice of the WTWT Plan A PPO plan or the WTWT Kaiser HMO plan. Details about these plans are provided below. 

All medical plans include vision and pharmacy coverage through their designated insurance provider.

PEBB Plans

Uniform Medical Plans (Regence) 
24 Hour Health Line: 
(800) 267-6729097

Customer Service: 
UMP Classic & UMP CDHP:
(888) 849-3681
UMP Plus Puget Sound:
(855) 776-9503
UMP Plus UW Medicine:
(855) 520-9500
Kaiser Permanente Plans 
24 Hour Health Line: 
(800) 297-6877

Customer Service: 
(866) 648-1928

WTWT Plans

24 Hour Health Line:
(877) 887-1020

NW Administrators: 
(800) 458-3053

Plan A Summary
Kaiser Summary

Maintaining Medical Coverage

PEBB Plans

Employees are eligible for PEBB benefits upon employment if the employer anticipates the employee will work an average of at least 80 hours per month and for at least eight hours each month for more than six consecutive months.

WTWT Plans

To become eligible, employees must meet the requirements in your collective bargaining agreement, consistent with Trust guidelines. You also must be an active employee with the minimum number of compensable hours or hours worked (usually 80) during a month for any one employer who makes Plan contributions.   

Lag Month Rule 

The Trust uses a lag month system — the Trust advances eligibility for one month while you continue working enough hours each month for a contribution to be made on your behalf. For example, if you work enough hours in January and your employer makes a contribution in February (the lag month), your coverage is effective in March (rather than February). This continues until you have a break in contributions.



Phone: (253) 798-7479
Phone: (253) 798-7462

8:00 a.m.–4:30 p.m.

Mailing Address:
955 Tacoma Ave S # 303, Tacoma, WA 98402