Illinois Statutes Chapter 820. Employment § 405/301. Termination of coverage

A. An employing unit shall cease to be an employer as of the first day of January of any calendar year, only if it files with the Director, prior to the 1st day of February of such year, a written application for termination of coverage, and the Director finds that the employment experience of such employer within the preceding calendar year was not sufficient to render an employing unit an employer under the provisions of subsections A or B of Section 205. For the purposes of this Section, the two or more employing units mentioned in subsections C, D, E, or F of Section 205 shall be treated as a single employing unit.

B. Notwithstanding the provisions of Section 205 and subsection A of this Section, an employing unit shall cease to be an employer as of the last day of a calendar quarter in which it ceases to pay wages for services in employment and ceases to have any individual performing services for it, provided that either it files with the Director, within 5 days after the date on which wage reports are due for the calendar quarter, a written application for termination of coverage and the Director approves the application, or the Director has determined on his or her own initiative, pursuant to standards established under duly promulgated rules, that the employing unit has permanently ceased to pay wages for services in employment and permanently ceased to have any individual performing services for it. If an employing unit's coverage is terminated under this subsection B, the termination of coverage shall be rescinded as of the date that the employing unit begins, later in the same calendar year or in the succeeding calendar year, to have any individual perform services for it on any part of any day.