70 ILCS 920/5.3a
Notwithstanding any other provision of law, if a majority vote of the board of directors is in favor of the proposition to annex the district to another district whose boundaries are contiguous, or consolidate the district into a municipality with which the district is coterminous or substantially coterminous, or consolidate the district into the county in which the district sits, and if the governing authorities of the governmental unit assuming the functions of the former district agree by resolution to accept the functions (and jurisdiction over the territory, if applicable) of the consolidated or annexed district, then the district shall cease. On the effective date of the annexation or consolidation, all the rights, powers, duties, assets, property, liabilities, indebtedness, obligations, bonding authority, taxing authority, and responsibilities of the district shall vest in and be assumed by the governmental unit assuming the functions of the former district.
The employees of the former district shall be transferred to the governmental unit assuming the functions of the former district. The governmental unit assuming the functions of the former district shall exercise the rights and responsibilities of the former district with respect to those employees. The status and rights of the employees of the former district under any applicable contracts or collective bargaining agreements, historical representation rights under the Illinois Public Labor Relations Act, or under any pension, retirement, or annuity plan shall not be affected by this amendatory Act.
70 ILCS 920/5.3a