Cement Masons and Plasterers Trust Funds (For WA, AK, and E. WA/ID)
The Cement Masons and Plasterers Trust Funds (for WA, AK, and E. WA/ID) was established to provide medical, retirement, and 401(k) account benefits for their eligible members and their dependents through the collective bargaining process.
This site provides general benefit information, forms and other Trust related items. Summary of Benefits and Coverage (SBC) and Glossary of Terms can be reviewed here.
Booking Appointments
Appointments: You can now book in-person appointments online at our Mercer Island Office! To book an appointment with a representative, please click here.
Quick Information
Announcements
- 401(k) Plan – WCM Monthly Fee Increase – October 2026
Please see the notice below concerning the increase of the monthly fee for certain 401(k) Plan-related costs.
Notice mailed September 17th, 2026
WCM Monthly Fee Increase – October 2026
Login to your account
To create your account, click on the link Create new account.
Your personal information can be accessed by logging into the secure Member website. To access your personal benefits you must create a new account and password.
NOTE: Dependents age 13 and older need to create a new account and password for online access. (Dependents use the Member Login option to login to their account.)
Transparency in Coverage Machine Readable Files
The link below is intended to meet the compliance requirements for the Transparency in Coverage Act. Per that legislation, these files are designed to be read by machines. These files are very large so download at your own risk.
For Aetna Choice POS IIA In-Network Provider negotiated rates and Allowed Amounts, click here. For Local 528 only, click here.
Out-of-Network rates click here.