The subject is human resource management and these are the recommended readings:-
Recommended reading for Employee Voice
Gennard. J. & Judge, G. (2005) Employee Relations, 4th edition, London: CIPD, Chapter 7.
Torrington, D et al, (2011) Human Resource Management, 8th ed., Chapter 19.
Rose, E. (2007) Employment Relations, 3rd ed., London: Pearson, Chapter 6.
Harley, B., Hyman, R., and Thompson, P. (2005) Participation and Industrial Democracy at Work: Essays in honour of Harvey Ramsay, Basingstoke: Palgrave Macmillan.
Mathieson, H. & Pendleton, A. (2006) Employee Voice in Lucas, R., Lupton, B. & Mathieson, H. (2006) Human Resource Management in an International Context, Chapter 10.
Benson, J. & Brown, M. (2010) Employee voice: does union membership matter? Human Resource Management Journal, 20: 1, pp80-99.
Dundon, T. et al (2005) The management of voice in non-union organisations: Managers perspectives Employee Relations, 27: 3, pp307-19.
Blyton, P. & Turnbull, P. (2004) The Dynamics of Employee Relations, 3rd ed., Basingstoke: Palgrave Macmillan.
CIPD Report (2010) A Decade of Change in Employee Voice, London: CIPD (see Moodle for an electronic copy)