SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 11-K

|X|  ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

     For the fiscal year ended December 31, 2000

     or

|_|  TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
     For the transition period from ____________ to ____________

Commission File Number:  0-795

     A.   Full title of the plan and address of the plan, if different from that
          of the issuer named below:

                            BADGER PAPER MILLS, INC.
                PROFIT SHARING PLAN AND TRUST FOR UNION EMPLOYEES

     B.   Name of issuer of the securities held pursuant to the plan and the
          address of its principal executive office:

                            BADGER PAPER MILLS, INC.
                              200 West Front Street
                            Peshtigo, Wisconsin 54157



                                       1

                              REQUIRED INFORMATION

          The following financial statements and schedules of the Badger Paper
Mills, Inc. Profit Sharing Plan and Trust for Union Employees, prepared in
accordance with the financial reporting requirements of the Employee Retirement
Income Security Act of 1974, as amended, are filed herewith.



                                       2


                       FINANCIAL STATEMENTS AND REPORT OF
                    INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

                  BADGER PAPER MILLS, INC. PROFIT SHARING PLAN
                          AND TRUST FOR UNION EMPLOYEES

                           December 31, 2000 and 1999




                                       3


                                 C O N T E N T S


                                                                            Page

Report Of Independent Certified Public Accountants                            5

Financial Statements

   Statements Of Net Assets Available For Benefits                            6

   Statements Of Changes In Net Assets Available For Benefits                 7

   Notes To Financial Statements                                              8


Supplementary Information                                                    12

   Report Of Independent Certified Public Accountants
    On Supplementary Information                                             13

   Schedule H, Line 4(i) - Schedule Of Assets Held At End Of Year            14

   Schedule G - Schedule Of Nonexempt Transactions                           15



                                       4


               REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


Trust Administrative Committee
Badger Paper Mills, Inc. Profit Sharing Plan
 and Trust For Union Employees

We have audited the accompanying statements of net assets available for benefits
of Badger Paper Mills, Inc. Profit Sharing Plan and Trust for Union Employees as
of December 31, 2000 and 1999, and the related statements of changes in net
assets available for benefits for the years then ended. These financial
statements are the responsibility of the Plan's management. Our responsibility
is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States of America. Those standards require that we plan and
perform the audits to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe our audits provide a reasonable
basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the net assets available for benefits of Badger Paper
Mills, Inc. Profit Sharing Plan and Trust for Union Employees as of December 31,
2000 and 1999, and the changes in net assets available for benefits for the
years then ended in conformity with accounting principles generally accepted in
the United States of America.

/s/ Grant Thornton LLP

Appleton, Wisconsin
May 17, 2001


                                       5

                            Badger Paper Mills, Inc.
                Profit Sharing Plan and Trust for Union Employees

                 STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS

                                  December 31,


                           ASSETS                        2000          1999
                                                         ----          ----

Cash                                                 $         -   $     5,800

Investments, at fair value
    (notes B3 and C)
      Common trust funds                               5,577,290     6,897,630
      Mutual funds                                    29,268,470    30,370,374
      Common stock                                        23,059        59,205
                                                     -----------   -----------
                                                      34,868,819    37,327,209

Employer contributions receivable (note A2)              310,133       311,754

Accrued income                                                 5            49
                                                     -----------   -----------

      Total Assets                                    35,178,957    37,644,812
                                                     -----------   -----------

                      LIABILITIES

Miscellaneous payable                                      9,364             -
                                                     -----------   -----------

      Total Liabilities                                    9,364             -
                                                     -----------   -----------

NET ASSETS AVAILABLE FOR BENEFITS                    $35,169,593   $37,644,812
                                                     ===========   ===========


The accompanying notes are an integral part of these statements.


                                       6


                                      Badger Paper Mills, Inc.
                          Profit Sharing Plan and Trust for Union Employees

                     STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS

                                       Year ended December 31,


                                                                          2000              1999
                                                                          ----              ----
Additions to net assets available for benefits:
     Investment income:
                                                                                  
        Interest income and dividends                                $    368,536       $    302,124
        Net appreciation in fair value of investments                           -          5,927,382
                                                                     ------------       ------------
                                                                          368,536          6,229,506
     Contributions (note A2):
        Employee contributions                                            532,572            536,375
        Employer contributions                                            310,133            311,754
                                                                     ------------       ------------
                                                                          842,705            848,129
                                                                     ------------       ------------

             Total additions                                            1,211,241          7,077,635
                                                                     ------------       ------------

Deductions from net assets available for benefits:
     Net depreciation in fair value of investments                      1,408,584                  -
     Benefits paid to participants                                      2,201,477          4,654,582
     Trust and other fees                                                  32,712             36,401
                                                                     ------------       ------------

             Total deductions                                           3,642,773          4,690,983
                                                                     ------------       ------------

              (DECREASE) INCREASE IN NET ASSETS
                AVAILABLE FOR BENEFITS                                 (2,431,532)         2,386,652

Net assets available for benefits:
     Beginning of year                                                 37,644,812         35,270,389
     Transfer to Badger Paper Mills, Inc. Profit Sharing
        Plan and Trust for Non-Union Employees                            (43,687)           (12,229)
                                                                     ------------       ------------

              Net assets available for benefits at end of year       $ 35,169,593       $ 37,644,812
                                                                     ============       ============



The accompanying notes are an integral part of these statements.


                                        7


                            Badger Paper Mills, Inc.
                Profit Sharing Plan and Trust for Union Employees

                          NOTES TO FINANCIAL STATEMENTS

                           December 31, 2000 and 1999


NOTE A - PLAN DESCRIPTION

     The following brief description of Badger Paper Mills, Inc. Profit Sharing
     Plan and Trust for Union Employees (the "Plan") is provided for general
     information purposes only. Participants should refer to the Plan agreement
     for more complete information.

     1.   General

     The Plan is a defined contribution pension plan which covers substantially
     all union employees of Badger Paper Mills, Inc. and Subsidiary (the
     "Company") who have completed at least one year of service with the Company
     at the Peshtigo division and have attained the age of 18. It is subject to
     the provisions of the Employee Retirement Income Security Act of 1974
     (ERISA) and subsequent legislation.

     2.   Contributions

     The Company contributes to the Plan each year the greater of (1) 25% of its
     adjusted net income, as defined in the Plan, for the year, (2) 25% of its
     adjusted net income, as defined in the Plan, for the year, calculated
     solely with reference to the Peshtigo division or (3) 4% of the total
     compensation paid to Plan participants during the year plus 4% of the
     excess compensation over the Social Security wage base. In addition, the
     Company's contribution shall not exceed 15% of the total compensation paid
     to Plan participants during the year and the Company reserves the right to
     terminate contributions.

     A cash or deferred arrangement plan, known as CODA, as authorized by
     Section 401(k) of the Internal Revenue Code (IRC), allows employees to
     defer a portion of their compensation up to the applicable IRC limits by
     having it contributed by the Company to their individual account in the
     Plan.

     3.   Vesting

     Participants are at all times fully vested in the value of their accounts
     attributable to their voluntary contributions.

     Participants become 20% vested in the Company's profit sharing contribution
     following three years of service and are additionally vested at 20% for
     each year of additional service up to seven years of service, at which time
     participants are fully vested. Upon death, disability or retirement,
     participants are automatically 100% vested regardless of years of service.


                                        8

                            Badger Paper Mills, Inc.
                Profit Sharing Plan and Trust for Union Employees

                    NOTES TO FINANCIAL STATEMENTS - CONTINUED

                           December 31, 2000 and 1999


NOTE A - PLAN DESCRIPTION - Continued

     4.   Benefits

     On termination of service due to death, disability or retirement, the
     participant or beneficiary is entitled to receive vested benefits within
     two months following the participant's separation from service. Upon a
     participant's termination from employment with the Company for a reason
     other than death, disability or retirement, the participant is entitled to
     the vested balance in their account.

     The method of distribution for account balances exceeding $5,000 will be
     determined by an election made by the Plan participant. The methods
     available are lump sum, direct rollover, installment payments or part
     installments and lump sum. The standard method for account balances less
     than $5,000 is lump sum payments.

     5.   Plan Termination

     Although it has not expressed any intent to do so, the Company has the
     right under the Plan to discontinue its contributions at any time and to
     terminate the Plan subject to the provisions of ERISA. Participants will
     become fully vested upon termination of the Plan.

     6.   Participant Accounts

     Each participant's account is credited with the participant's contribution
     and the Company's profit contribution, along with an allocation of Plan
     earnings and forfeitures of terminated participants' nonvested accounts.
     The participants share in the Company's contributions and forfeitures on
     the basis of allocated shares. Shares are determined through a formula
     based upon each participant's earnings and number of years of service with
     the Company.


NOTE B - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     The financial statements of the Plan have been prepared in conformity with
     accounting principles generally accepted in the United States of America as
     applied to profit sharing plans.

     A summary of the significant accounting policies consistently applied in
     the preparation of the accompanying financial statements follows.

     1.   Use of Estimates

     In preparation of the financial statements in conformity with accounting
     principles generally accepted in the United States of America, management
     is required to make estimates and assumptions that affect the reported
     amounts of assets and liabilities, the disclosure of contingent assets and
     liabilities at the date of the financial statements and the reported
     amounts of revenues and expenses during the reported period. Actual results
     could differ from those estimates.


                                        9

                            Badger Paper Mills, Inc.
                Profit Sharing Plan and Trust for Union Employees

                    NOTES TO FINANCIAL STATEMENTS - CONTINUED

                           December 31, 2000 and 1999


NOTE B - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Continued

     2.   Basis of Accounting

     The financial statements of the Plan are prepared on an accrual basis.

     3.   Valuation of Investments

     The Plan's investments are held by Wells Fargo Bank Minnesota, N.A. (the
     "Trustee"). Plan investments are stated at market value as reported by the
     Plan Trustee.

     Investments in securities traded on a national securities exchange are
     valued at the last reported sales price on the last business day of the
     year; securities traded in the over-the-counter market and listed
     securities for which no sale was reported on that date are valued at the
     mean between the last reported bid and asked prices. Investments in mutual
     funds are stated at a value based upon the per unit allocation of the
     funds' net assets, stated at fair value on the last business day of the
     year.

NOTE C - INVESTMENTS

     The following schedule presents the investments held by the Trustee in each
     fund at December 31, 2000 and 1999. Investments that represent 5% or more
     of the Plan's net assets are separately identified.

                                                         2000          1999
                                                     -----------   -----------
         Common Trust Funds:
           Wells Fargo Stable Return Fund            $ 5,575,211   $ 6,888,442
           Other                                           2,079         9,188

         Mutual Funds:
           Wells Fargo Growth Balanced Fund            7,879,403     9,675,987
           Wells Fargo Growth Equity Fund              4,721,807     4,604,824
           Wells Fargo Diversified Equity Fund         4,489,943     9,958,165
           Janus Overseas Fund                         2,631,883     3,916,362
           Wells Fargo Large Company Growth Fund       3,078,149     1,209,701
           Wells Fargo Small Cap Fund                  4,749,986       487,219
           Other                                       1,717,299       518,116

         Other                                            23,059        59,205
                                                     -----------   -----------

                                                     $34,868,819   $37,327,209
                                                     ===========   ===========


                                        10


                            Badger Paper Mills, Inc.
                Profit Sharing Plan and Trust for Union Employees

                    NOTES TO FINANCIAL STATEMENTS - CONTINUED

                           December 31, 2000 and 1999


NOTE C - INVESTMENTS - Continued

     The Plan's investments (including investments bought, sold and held during
     the year) appreciated (depreciated) in value as follows for the years ended
     December 31,
                                                         2000          1999
                                                     -----------   -----------

           Mutual Funds                              $(1,384,906)  $ 5,957,418
           Common Stock                                  (23,678)      (30,036)
                                                     -----------   -----------

                                                     $(1,408,584)  $ 5,927,382
                                                     ===========   ===========

NOTE D - ADMINISTRATIVE EXPENSES

     All administrative expenses in connection with the operation of the Plan
     are paid from Plan earnings.

NOTE E - INCOME TAX STATUS

     The Plan obtained its latest determination letter on February 25, 1999, in
     which the Internal Revenue Service stated that the Plan was designed in
     accordance with applicable requirements of the IRC. Since receiving the
     determination letter, the Plan has been amended. However, the Plan
     administrator and the Plan's tax counsel believe that the restated Plan is
     designed, and is currently being operated in compliance with, the
     applicable requirements of the IRC.



                                       11


                            SUPPLEMENTARY INFORMATION



                                       12



               REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
                          ON SUPPLEMENTARY INFORMATION


Trust Administrative Committee
Badger Paper Mills, Inc. Profit Sharing Plan
  and Trust for Union Employees

Our audit was conducted for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplementary schedules of Badger
Paper Mills, Inc. Profit Sharing Plan and Trust for Union Employees are
presented for the purpose of additional analysis and are not a required part of
the basic financial statements but are supplementary information required by the
Department of Labor's Rules and Regulations for Reporting and Disclosure under
the Employee Retirement Income Security Act of 1974. The supplementary schedules
have been subjected to the auditing procedures applied in the audits of the
basic financial statements and, in our opinion, are fairly stated in all
material respects in relation to the basic financial statements taken as a
whole.

/s/ Grant Thornton LLP

Appleton, Wisconsin
May 17, 2001


                                       13


                                                   Badger Paper Mills, Inc.
                                      Profit Sharing Plan and Trust for Union Employees

                                SCHEDULE H, LINE 4(i) - SCHEDULE OF ASSETS HELD AT END OF YEAR

                                            Employer ID # 39-0143840 - Plan # 001

                                                      December 31, 2000



           (b) Identity of issue, borrower,            (c) Description of investment including maturity          (e) Current
  (a)          lessor or similar party             date, rate of interest, collateral, par or maturity value         value
- -------    ---------------------------------      -----------------------------------------------------------    ------------
                                                                                                        
*          Wells Fargo Bank, N.A.                 Stable Return Fund                                             $ 5,575,211
                                                  Short-Term Investment Fund                                           2,079
                                                                                                                 -----------
                                                                                                                   5,577,290

*          Wells Fargo Bank, N.A.                 Growth Balanced Fund                                             7,879,403
                                                  Growth Equity Fund                                               4,721,807
                                                  Large Company Growth Fund                                        3,078,149
                                                  Strategic Income Fund                                            1,485,712
                                                  Diversified Equity Fund                                          4,489,943
                                                  S & P 500 Collective Fund                                          231,587
                                                  Small Cap Fund                                                   4,749,986
                                                                                                                 -----------
                                                                                                                  26,636,587

*          Badger Paper Mills, Inc.               Common Stock                                                        23,059

                                                  Janus Overseas Fund                                              2,631,883
                                                                                                                 -----------

                                                                                                                 $34,868,819
                                                                                                                 ===========
* Indicates party-in-interest investment.



                                       14



                                                     Badger Paper Mills, Inc.
                                         Profit Sharing Plan and Trust for Union Employees

                                          Schedule G - SCHEDULE OF NONEXEMPT TRANSACTIONS

                                               Employer ID # 39-0143840 - Plan # 001

                                                         December 31, 2000


                      (b)           (c) Description of                                   (g) Expenses                       (j)
                 Relationship to   transactions including                                incurred in    (h)      (i)      Net gain
   (a)           plan, employer,   maturity, date, rate of      (d)       (e)     (f)    connection    Cost    Current    or (loss)
Identity of      or other party-   interest, collateral,     Purchase   Selling  Lease      with        of      value     on each
party involved     in-interest     par or maturity value       price     price   rental  transaction   asset   of asset  transaction
- --------------   ---------------   ------------------------  --------   -------  ------- -----------   -----   --------  -----------

                                                                                                  
Employer          Plan Sponsor      In one instance, a          N/A       N/A    $8,466      N/A        N/A    $8,466        N/A
                                    non-periodic payroll
                                    deferral was inadver-
                                    tently deposited past
                                    the 15 day requirement.





                                        15


                                   SIGNATURES

          Pursuant to the requirements of the Securities Exchange Act of 1934,
the Profit Sharing Trust Committee for Union Employees, which administers the
Plan, has duly caused this Annual Report to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Peshtigo, and State of
Wisconsin, on this 13th day of June, 2001.

                                        BADGER PAPER MILLS, INC. PROFIT
                                        SHARING PLAN AND TRUST FOR
                                        UNION EMPLOYEES



                                        By:  /s/ Michael J. Bekes
                                           -------------------------------------
                                           Michael J. Bekes



                                        By:  /s/ Michael E. Staffeldt
                                           ------------------------------------
                                           Michael E. Staffeldt



                                        By:  /s/ Kenneth W. Berman
                                           -------------------------------------
                                           Kenneth W. Berman




          The foregoing persons are all of the members of the Profit Sharing
Trust Committee for Union Employees which is the administrator of the Badger
Paper Mills, Inc. Profit Sharing Plan and Trust for Union Employees.



                                       16


                                  EXHIBIT INDEX

                            BADGER PAPER MILLS, INC.
                PROFIT SHARING PLAN AND TRUST FOR UNION EMPLOYEES

                                    FORM 11-K

     Exhibit No.                    Exhibit                          Page No.
     ----------                     -------                          --------

     (23.1)              Consent of Grant Thornton, LLP                19



                                       17


                                                                  Exhibit (23.1)




                                       18