UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No.            )

Filed by the Registrant [P]

Filed by a Party other than the Registrant [   ]

Check the appropriate box:

[   ]

Preliminary Proxy Statement

[   ]

Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

Definitive Proxy Statement

[   ]

Definitive Additional Materials

[P]

Soliciting Material Pursuant to §240.14a-12

WAUSAU PAPER CORP.

(Name of Registrant as Specified In Its Charter)

NOT APPLICABLE

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[P]

No fee required.

[   ]

Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

1)

Title of each class of securities to which transaction applies:

2)

Aggregate number of securities to which transaction applies:

3)

Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

4)

Proposed maximum aggregate value of transaction:

5)

Total fee paid:

-1-

---

[   ]

Fee paid previously with preliminary materials.

[   ]

Check box if any part of  the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously.  Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

1)

Amount Previously Paid:

2)

Form, Schedule or Registration Statement No.:

3)

Fling Party:

4)

Date Filed:

Important Additional Information

Wausau Paper Corp., (the “Company”) its directors, its executive officers and certain other employees are participants in the solicitation of proxies from shareholders in connection with the Company’s 2014 annual meeting of shareholders.  The Company will file a proxy statement with the Securities and Exchange Commission (the “SEC”) in connection with its 2014 annual meeting of stockholders.  COMPANY SHAREHOLDERS ARE STRONGLY ENCOURAGED TO READ ANY SUCH PROXY STATEMENT (INCLUDING ANY AMENDMENTS AND SUPPLEMENTS) AND ACCOMPANYING PROXY CARD WHEN THEY BECOME AVAILABLE, AS THEY WILL CONTAIN IMPORTANT INFORMATION.  The names of the participants in the Company’s solicitation and their respective interests in the Company by security holdings or otherwise are set forth in the Company’s DEFA 14A filing filed with the SEC on February 11, 2014 (File No. 001-13923; Accession No. 0000916480-14-000031).  These documents, as well as the 2014 proxy statement, any other relevant documents and other material filed with the SEC concerning the Company are (or will be when filed) available free of charge at www.sec.gov and www.wausaupaper.com.

On February 11, 2014, the Company used the following slide presentation in connection with its conference call to discuss 2013 fourth quarter and full year financial results:

-2-

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---