More than 230 employees of the Cook County Forest Preserves walked off the job on Monday, August 17, 2026, initiating the first strike ever staged by Teamsters Local 700. The union, which represents workers across the preserve system, announced the stoppage after the start of the workday, signaling a new phase in labor relations for the county’s natural‑resource staff.

The striking workers are part of a collective bargaining unit that covers a wide range of duties within the preserves, from maintenance and landscaping to administrative support. By leaving their posts, the employees have halted routine operations throughout the forest preserve network that serves residents of Chicago and surrounding suburbs.

The decision to strike comes after months of contract negotiations that did not produce an agreement acceptable to the union members. Teamsters Local 700 has indicated that the walkout is intended to press county officials for terms that address wages, benefits, and working conditions, though specific demands have not been disclosed in the public record.

County officials confirmed that the strike began on August 17 and acknowledged the unprecedented nature of the action, noting that it is the first time the union has taken such a step. They emphasized that essential public safety services will continue, but many recreational and maintenance activities are likely to be delayed or suspended while the dispute remains unresolved.

The strike affects all forest preserve sites within Cook County, a region that includes more than 70,000 acres of parkland, trails, and wildlife habitats. With over 230 workers participating, the labor action represents a significant portion of the preserve’s workforce and could influence the timing of upcoming projects and seasonal programs.

Both the union and county representatives have indicated a willingness to return to the negotiating table, but no timeline has been set for a resolution. The situation remains fluid as both sides assess the impact of the work stoppage on the community and the preserve’s operations.