(1) Not-for-profit employers eligible to be Participating Employers under the Plan shall include organizations that:

1. (a) are incorporated under Code Section 501(c);
2. (b) are established, organized or chartered under the laws of the Commonwealth of Massachusetts;
3. (c) are doing business in the Commonwealth of Massachusetts;
4. (d) employ not more than 100 persons as of the date the Participation Agreement is fully executed; and
5. (e) agree to be in compliance with the provisions of the Plan documents and complete any other documentation required for participation in the Plan as directed by the MEP Sponsor.