I have something useful!

Previous company had the following in their contract:

    TriNet Group, Inc. (“TriNet”): The Company’s payroll and other human resource management services are provided through TriNet, a
    professional employer organization. This arrangement between the Company and TriNet means that TriNet will be considered your
    employer of record for payroll and human resource management purposes and your managers here at the Company will be responsible for
    directing your work, reviewing your performance, setting your schedule, and otherwise directing your work at the Company. This means
    that the Company and TriNet are co-employers, and you are technically a “co-employee”. As a “co-employee” of TriNet, you will be
    required to accept the policies and procedures set forth in TriNet’s Terms and Conditions Agreement (“TCA”). 

More or less: income came from TriNet, insurance/benifits all came from TriNet, but I technically worked for $company.