OLYMPIA, Wash. (AP) — Groups that represent current and former government workers in Washington state expressed concern Thursday about a plan in the Senate that seeks to prevent sudden increases in pension values.

Matt Zuvich, a lobbyist with the Washington Federation of State Employees, testified before a legislative committee that the union opposes pension spiking because it undermines stability of the systems along with public trust. However, Zuvich and other employee representatives feared that the Senate’s current plan would cut into the legitimate overtime needs of public safety workers or lead employers to dangerously curtail overtime in times of need.