<SUBMISSION>
<ACCESSION-NUMBER>0001047469-06-014392
<TYPE>FWP
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20061121
<DATE-OF-FILING-DATE-CHANGE>20061121
<SUBJECT-COMPANY>
<COMPANY-DATA>
<CONFORMED-NAME>Willdan Group, Inc.
<CIK>0001370450
<ASSIGNED-SIC>8711
<IRS-NUMBER>141951112
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>FWP
<ACT>34
<FILE-NUMBER>333-136444
<FILM-NUMBER>061231457
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>2401 EAST KATELLA AVENUE, SUITE 300
<CITY>ANAHEIM
<STATE>CA
<ZIP>92806
<PHONE>800-424-9144
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>2401 EAST KATELLA AVENUE, SUITE 300
<CITY>ANAHEIM
<STATE>CA
<ZIP>92806
</MAIL-ADDRESS>
</SUBJECT-COMPANY>
<FILED-BY>
<COMPANY-DATA>
<CONFORMED-NAME>Willdan Group, Inc.
<CIK>0001370450
<ASSIGNED-SIC>8711
<IRS-NUMBER>141951112
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>FWP
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>2401 EAST KATELLA AVENUE, SUITE 300
<CITY>ANAHEIM
<STATE>CA
<ZIP>92806
<PHONE>800-424-9144
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>2401 EAST KATELLA AVENUE, SUITE 300
<CITY>ANAHEIM
<STATE>CA
<ZIP>92806
</MAIL-ADDRESS>
</FILED-BY>
<DOCUMENT>
<TYPE>FWP
<SEQUENCE>1
<FILENAME>a2174805zfwp.htm
<DESCRIPTION>FWP
<TEXT>
<HTML>
<HEAD>
</HEAD>
<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
<BR>
<P ALIGN="RIGHT"><FONT SIZE=2><B>Free Writing Prospectus<BR>
Filed Pursuant to Rule&nbsp;433<BR>
Registration No.&nbsp;333-136444  </B></FONT></P>

<P ALIGN="RIGHT"><FONT SIZE=2><B>UNDERWRITING PRICING WIRE  </B></FONT></P>

<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>RE:</FONT></DT><DD><FONT SIZE=2>2,900,000
SHARES<BR>
WILLDAN GROUP,&nbsp;INC.<BR>
COMMON STOCK </FONT></DD></DL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;THE
OFFERING WAS DECLARED EFFECTIVE BY THE SEC AT 1:00 PM (PST), NOVEMBER 20, 2006. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TERMS
ARE AS FOLLOWS </FONT></P>

<!-- User-specified TAGGED TABLE -->
<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2>OFFERING PRICE:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2>$10.00</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
GROSS SPREAD:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
$0.70</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
MANAGEMENT FEE:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
$0.14</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
UNDERWRITING FEE:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
$0.14</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
SELLING CONCESSION:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
$0.42</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
REALLOWANCE:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
$0.10</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
TRADE DATE:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
NOVEMBER 21, 2006</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
SETTLEMENT DATE:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
NOVEMBER 27, 2006</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
DELIVERY:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
WILL SETTLE DTC</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
NASDAQ TICKER SYMBOL:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
WLDN</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="72%"><FONT SIZE=2><BR>
CUSIP NUMBER:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="25%"><FONT SIZE=2><BR>
96924N 10 0</FONT></TD>
</TR>
</TABLE>
<!-- end of user-specified TAGGED TABLE -->


<P><FONT SIZE=2>The
issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that
registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on
the SEC Web site at www.sec.gov. Alternatively, the issuer, the underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling (213)
688-8080. </FONT></P>

<HR NOSHADE>
<P style='page-break-before:always'></p>
<!-- ZEQ.=1,SEQ=1,EFW="2174805",CP="WILLDAN GROUP, INC.",DN="1",CHK=575854,FOLIO='blank',FILE='DISK128:[06MOC6.06MOC1326]MA1326A.;5',USER='KSOLTER',CD='20-NOV-2006;22:56' -->
<!-- THIS IS THE END OF A COMPOSITION COMPONENT -->
<BR>
<!-- SEQ=,FILE='QUICKLINK',USER=JKARRAS,SEQ=,EFW="2174805",CP="WILLDAN GROUP, INC.",DN="1" -->
<!-- TOCEXISTFLAG -->
</BODY>
</HTML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
