The department may sue and be sued.
Wis. Stat. § 301.04
The Department of Corrections (DOC) is entitled to sovereign immunity. DOC lacks sufficient attributes to render it an independent going concern. Despite the breadth of its statutory powers, the character of those powers reveals that the legislature did not intend DOC to be anything other than an arm of the state. The legislature has not expressly waived DOC's sovereign immunity. This section is not an express waiver of DOC's tort immunity but rather addresses DOC's capacity to be sued. Mayhugh v. State, 2015 WI 77, 364 Wis. 2d 208, 867 N.W.2d 754, 13-1023.