One insurer's refusal to defend based upon its "other insurance" provision ultimately meant the insurer had to pay all of the insured's defense costs. Steadfast Ins. Co. v. Greenwich Ins. Co., 2018 Wis. App. LEXIS 51 (Wis. Ct. App. Jan. 17, 2018).

Milwaukee Metropolitan Sewerage District (MMSD) was a government agency that provided water reclamation and flood management services to the city. From March 1, 1998 to February 20, 2008, MMSD contracted with United Water Services Milwaukee LLC to operate the sewerage system. From March 1, 2008 on, MMSD contracted with Veolia Water North America-Central, LLC to operate the system.

Through agreements, both companies were obligated to indemnify MMSD for claims arising out of the operations and maintenance of the system and to obtain insurance to cover their indemnity obligations. Both companies complied.