Boeing machinists continue a seventh-week strike, rejecting the latest contract proposal and demanding reinstatement of the traditional pension plan lost nearly a decade ago. Boeing offers incremental wage hikes and benefits, but workers argue these fail to address long-term security concerns tied to retirement. Workers oppose 401(k) plans as they shift retirement risks onto employees, making savings less secure and predictable than traditional pensions. Pensions pose a problem for companies because they require long-term financial commitments to provide guaranteed retirement income.