Wis. Stat. § 13.21: State departments to cooperate in providing legislative help.

(1) Because of the difficulty in securing necessary help to fill legislative positions in regular sessions of the legislature, due to the manpower shortage, each department and agency of the state government and the employees thereof shall cooperate with the legislature to the fullest extent in the transfer to the legislature of such employees as are necessary to fill all legislative positions.

(2) All employees so transferred shall receive such compensation as is prescribed by law for such legislative positions. Such employees shall continue their civil service rating, sick leave, vacation and other rights under ch. 230 and after termination of their employment in such legislative positions shall be returned to the respective departments and agencies from which they were transferred for resumption of their regular employment.