First Business Financial Services, Inc. Adopts Shareholder Rights Plan

MADISON, Wis., June 6, 2008 (PRIME NEWSWIRE) -- First Business Financial
Services, Inc. (Nasdaq:FBIZ) announced that its Board of Directors adopted a
shareholder rights agreement. In connection with the adoption of the rights
agreement, the Board declared a dividend of one common share purchase right on
each outstanding share of First Business's common stock. The issuance of the
rights under the rights agreement will be made on July 15, 2008 to shareholders
of record as of the close of business on July 1, 2008.

The rights are designed to enable all First Business shareholders to realize the
full long-term value of their investment and to provide for fair and equal
treatment of all shareholders in the event that an unsolicited attempt is made
to acquire First Business. First Business believes that the rights agreement
will help protect shareholders against abusive takeover tactics that may be used
to gain control of the company without paying a price that is in the best
interest of all shareholders. The rights agreement was not adopted in response
to any known offers for First Business and is similar to rights agreements
adopted by many other companies.

The rights will be exercisable only if a person or group acquires 15% or more of
First Business's common stock or announces a tender offer, consummation of which
would result in ownership by a person or group of 15% or more of the common
stock.

Each right will initially entitle shareholders to buy one-half of one share of
common stock at an initial exercise price of $85.00 per full share, subject to
adjustment. If any person becomes a 15% or more shareholder of First Business,
then each right (subject to certain limitations) will entitle its holder to
purchase, at the rights' then-current exercise price, a number of common shares
of First Business or of the acquiror having a market value at the time of twice
the rights' full share exercise price.

First Business's Board of Directors may redeem the rights for $0.001 per right
at any time prior to the time when the rights become exercisable. Unless the
rights are redeemed, exchanged or terminated earlier, they will expire on June
5, 2018.

Additional details regarding the rights agreement are contained in a Form 8-K to
be filed by First Business with the Securities and Exchange Commission and in a
summary to be mailed to all shareholders on or about July 15, 2008.

First Business Financial Services, Inc.

First Business Financial Services, Inc. is a Wisconsin-based bank holding
company that specializes in focused financial solutions for businesses, key
executives, and high net worth individuals through its operating companies. Its
companies include: First Business Bank - Madison; First Business Bank -
Milwaukee; First Business Bank - Northeast; First Business Trust & Investments;
First Business Equipment Finance, LLC; and First Business Capital Corp. For
additional information, visit www.firstbusiness.com or call 608-238-8008.

The First Business Financial Services, Inc. logo is available at
http://www.primenewswire.com/newsroom/prs/?pkgid=2667

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CONTACT: First Business Financial Services, Inc.
Jim Ropella, Senior Vice President and CFO
608-232-5970
jropella@firstbusiness.com