Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0104
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
  Waslaski Shane N
2. Date of Event Requiring Statement (Month/Day/Year)
04/11/2011
3. Issuer Name and Ticker or Trading Symbol
Otter Tail Corp [OTTR]
(Last)
(First)
(Middle)
215 S CASCADE ST
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Sr VP, Man & Infra Platform
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

FERGUS FALLS, MN 56537-2801
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock (1) 716.1311 (2)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units 04/08/2012 04/08/2012 Common Stock 900 $ (3) D  
Restricted Stock Units 04/08/2013 04/08/2013 Common Stock 2,000 $ (3) D  
Restricted Stock Units 04/08/2014 04/08/2014 Common Stock 3,000 $ (3) D  
Restricted Stock Units 04/08/2015 04/08/2015 Common Stock 5,500 (4) $ (3) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Waslaski Shane N
215 S CASCADE ST
FERGUS FALLS, MN 56537-2801
      Sr VP, Man & Infra Platform  

Signatures

/s/ Shane N Waslaski by Debra J Lill, Attorney-in-Fact 04/12/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Otter Tail Corporation's board of directors held a meeting following our Shareholder Annual Meeting, April 11, 2011 and elected Shane N Waslaski, Sr Vice President, Manufacturing & Infrastructure Platform as an executive officer.
(2) Share total represents 290.1311 shares held jointly with his wife in the Employee Stock Purchase Plan, 30 shares held individually with Wells Fargo and 396 shares held individually with Merrill Lynch.
(3) Each restricted stock unit represents a contingent right to receive one share of Common Stock. The reporting person receives one share of Common Stock for each restricted stock unit that vests.
(4) Restricted Stock Units acquired under the Corporation's Stock Incentive Plan. The 5,500 units were granted 4/11/11 and vest 100% on 4/8/2015 based on continued employment and carry no voting rights or rights to dividends prior to vesting date. This grant has a FMV of $22.51.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.