DENVER (AP) — More than 10,000 King Soopers grocery workers across the Denver area ended their 12-day strike late Monday after union leaders said they secured some basic protections for returning workers and agreed to resume bargaining with the Kroger-owned chain.

After two weeks of striking, around 10,000 unionized Colorado grocery workers are heading back to work at King Soopers, a Kroger-owned regional chain. The United Food and Commercial Workers International Union Local 7 and King Soopers signed a return to work agreement late Monday night and secured to a 100-day period of labor peace while contract negotiations continue.

Pueblo King Soopers employees with the United Food and Commercial Workers Local 7 joined a statewide unfair labor practice strike on Feb. 7.