Third Amendment to Employee Agreement with Edward C. Nafus, dated 3/6/2007



 Exhibit 10.46C 
 THIRD AMENDMENT TO EMPLOYMENT AGREEMENT 
 This Third Amendment to Employment Agreement
is made and entered into on the 6 day of March 2007, among CSG SYSTEMS INTERNATIONAL, INC. (“CSGS”), a Delaware corporation, CSG SYSTEMS, INC. (“Systems”), a Delaware corporation, and EDWARD C. NAFUS (the
“Executive”). CSGS and Systems collectively are referred to in this First Amendment and the Employment Agreement as the “Companies”. 
 * * * 
 WHEREAS, the Companies and the Executive entered into an Employment Agreement dated
November 17, 1998 (the “Employment Agreement”), a First Amendment thereto dated January 11, 2005 (the “First Amendment”), and a Second Amendment thereto dated March 8, 2005 (the “Second Amendment”); and

 WHEREAS, the Companies and the Executive desire to amend the Employment Agreement as herein set forth; 
 NOW, THEREFORE, in consideration of the foregoing recitals and the agreements of the parties contained in this document, the Companies and the Executive
agree as follows: 
 1 . Paragraph 2 of the Employment Agreement hereby is amended in its entirety so as to read as follows: 
 “2. Term of Employment. The employment of the Executive under this agreement shall begin on the date of this agreement and
shall continue until the first to occur of (a) the Executive’s death, (b) the effective date of the Executive’s voluntary resignation as an employee of the Companies, (c) the effective date of the termination of the
Executive’s employment by the Companies by reason of the Executive’s disability pursuant to Paragraph 10(b) of this agreement, (d) the effective date of the termination of the Executive’s employment by the Companies for cause
pursuant to Paragraph 10(c) of this agreement, (e) the effective date of the termination of the Executive’s employment by the Companies for any reason other than cause or the Executive’s death or disability pursuant to Paragraph 10(d)
or Paragraph 10(e) of this agreement, or (f) the effective date of the termination of the Executive’s employment pursuant to Paragraph 10(f) of this agreement. Upon the termination of the employment of the Executive under this agreement,
the applicable provisions of Paragraph 10 of this agreement shall become effective; and the Companies and the Executive thereupon and thereafter shall comply with the applicable provisions of Paragraph 10 of this agreement.” 
 2. Upon the execution of this Third Amendment to Employment Agreement, any subsequent reference to the Employment Agreement shall mean the Employment
Agreement as amended by the First Amendment, the Second Amendment, and this Third Amendment to Employment Agreement. As amended by die First Amendment, the Second Amendment, and this Third Amendment to Employment Agreement, the Employment Agreement
shall remain in full force and effect according to its terms. 







 IN WITNESS WHEREOF, each of the parties has caused this Third Amendment to Employment Agreement to be
executed as of the date first set forth above. 
  

			
	 CSG SYSTEMS INTERNATIONAL, INC.,
 a
Delaware corporation

		
	By:	 	 /s/ Robert M. Scott

		 	 Robert M. Scott, Executive Vice
 President and Chief
Operating Officer

	
	 CSG SYSTEMS, INC., a Delaware
 corporation


		
	By:	 	 /s/ Robert M. Scott

		 	Robert M, Scott, Executive Vice
		 	President and Chief Operating Officer
		
		 	 /s/ Edward C. Nafus

		 	Edward C. Nafus


  

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