45 CFR § 157.200
Eligibility of qualified employers to participate in a SHOP
April 14, 2021
(a) General requirement. Only a qualified employer may participate in the SHOP in accordance with §155.710 of this subchapter.
(b) Continuing participation for growing small employers. A qualified employer may continue to participate in the SHOP if it ceases to be a small employer in accordance with §155.710 of this subchapter.
(c) Participation in multiple SHOPs. A qualified employer may participate in multiple SHOPs in accordance with §155.710 of this subchapter.