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                                                                       EXHIBIT 8
                       [LETTERHEAD OF HALE AND DORR LLP]
 
November 25, 1998
 
Network Plus Corp.
234 Copeland Street
Quincy, Massachusetts 02169
 
Re:  Registration Statement on Form S-4
     File No. 333-64663
 
Ladies and Gentlemen:
 
     We are counsel to Network Plus Corp., a Delaware corporation (the
"Company"), and have acted as such in connection with the filing of a
Registration Statement on Form S-4 (File No. 333-64663) (the "Registration
Statement") under the Securities Act of 1933, as amended (the "Securities Act"),
covering up to 40,000 shares of 13.5% Series A1 Cumulative Preferred Stock due
2009 (the "New Shares") offered in exchange for up to 40,000 shares of 13.5%
Series A Cumulative Preferred Stock due 2009 originally issued and sold in
reliance upon an exemption from registration under the Securities Act (the
"Original Shares").
 
     We have examined the Registration Statement and the Company's Certificate
of Incorporation and Certificate of Designation of the Series A Preferred Stock,
which have been filed with the Securities and Exchange Commission as Exhibits to
the Registration Statement. In addition, we have examined, and have relied as to
matters of fact upon, the originals or copies, certified or otherwise identified
to our satisfaction, of such corporate records, agreements, documents and other
instruments and such certificates or comparable documents of public officials
and of officers and representatives of the Company, and have made such other and
further investigations, as we have deemed relevant and necessary as a basis for
the opinion hereinafter set forth.
 
     In such examination, we have assumed the genuineness of all signatures, the
legal capacity of natural persons, the authenticity of all documents submitted
to us as originals and the conformity to original documents of all documents
submitted to us as certified or photostatic copies, and the authenticity of the
originals of such latter documents.
 
     Based upon the foregoing, and subject to the qualifications and limitations
stated herein, we are of the opinion that the statements made in the
Registration Statement under the caption "Federal Income Tax Considerations,"
insofar as they purport to constitute summaries of matters of United States
federal income tax law and regulations or legal conclusions with respect
thereto, constitute accurate summaries of the matters described therein in all
material respects.
 
     We are members of the Bar of the Commonwealth of Massachusetts and we do
not express any opinion herein concerning any law other than the law of the
Commonwealth of Massachusetts and the federal law of the United States. This
opinion is rendered to you solely in connection with the above-described
transaction and may not be relied upon for any other purpose without our prior
written consent.
 
     We hereby consent to the use of this opinion as an Exhibit to the
Registration Statement and to the reference to our firm under the caption
"Validity of the Securities" in the Prospectus included therein.
 
                                          Very truly yours,
 
                                          /s/ HALE AND DORR LLP
 
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                                          HALE AND DORR LLP