6 CONCLUSION 
Based on the results of the study only 
transformational leadership influences volunteerism. 
While transformational leadership and volunteerism 
do not affect organizational commitment. On the 
other hand, managerial perceptions have the 
opportunity to strengthen the relationship between 
volunteerism and organizational commitment, but 
based on the results of this study are not able to 
increase the significance value. The effect of 
transformational leadership on volunteerism 
indicates that members of the four NGOs that are the 
object of research consider their leaders to have 
contributed to increase volunteerism in themselves. 
REFERENCES 
Andrews, F. E. (1956). Philanthropic Foundations, New 
York: Russell Sage Foundation 
Anheier, H. K. (2005), Nonprofit Organizations Theory, 
Management, Policy. Simultaneously published in the 
USA and Canada by Routledge 270 Madison Ave, New 
York, NY 10016 
Avolio, B.J., Zhu, W., Koh, W., and Bhatia, P. 2004. 
Transformational Leadership and Organizational 
Commitment: Mediating Role of Psychological 
Empowerment and Moderating Role of Structural 
Distance. Journal of Organizational Behavior, Vol. 25, 
pp. 951-968. 
Bass, B. M., and Avolio, B. J. (1995). Individual 
Consideration Viewed at Mulitiple Levels of Analyis: A 
Multi-level Framework for Examining The Diffusion of 
Transformasional Leadership. The Leadership 
Quarterly, 6, 199-218. 
Bass, M. B., and Riggio, E. G. (2006). Transformasional 
Leadership,  Lawrence Erlbaum Associates Publisher, 
Mawah, New Jersey. 
Bateman, T. S., and Strasser, S. (1984). A Longitudinal 
Analysis of the Antecedents of Organizational 
Commitment. Academy of Management Journal, 27 (1), 
95-112 
Bono, J., and Judge, T. (2003). Self-concordance at work: 
toward understanding the motivational effects of 
transformational leadership. Academy of Management 
Journal, 46, 554–571. 
Catano, V. M., Pond, M., and Kelloway, E. K. (2001). 
Exploring Commitment and Leadership in Volunteer 
Organizations.  Leadership and Organization 
Development Journal, 22 (6), 256-263. 
Clary, E. G., and Snyder, M. (1999). The Motivations to 
Volunteer: Theoritical and Practical Considerations. 
Current Decisions in Psychological Science, 8, 156. 
Dwyer, P.C., Bono, J.E., Snyder, M., Nov, O., and Berson, 
Y. (2013). Source of Volunteer Motivation: 
Transformational Leadership and Personal Motives 
Influence  Volunteer Outcomes. Nonprofit Management 
and Leadership 24 (2), 181-205 
Exley, C. L., and Terry. S. J. (2017). Wage Elasticities in 
Working and Volunteering: The Role of Reference 
Points in a Laboratory Study. Institute for Operations 
Research and the Management Sciences (INFORMS), 
1-13. 
Geroy, G. D., Wright, P. C., and Jacoby, L. (2000). 
Toward a Conceptual Framework of Employee 
Volunteerism: An Aid for The Human Resources 
Manager. Management Decision, 38 (4), 280-286. 
Jain, A. K., Malhotra, N. K., and Guan, C. (2012). Positive 
and Negative Affectivity as Mediators of Volunteerism 
and Service-Oriented Citizenship Behavior and 
Customer Loyalty. Psychology and Marketing, 29 (12), 
1004–1017. 
Jain, A. K. (2015). Volunteerism and Organisational 
Culture: Relationship to Organizational Commitment 
and Citizenship Behaviors in India. Cross Cultural 
Management: An International Journal, 22 (1). 
Koh, W. L., Steers, R. M., and Terborg, J. R. (1995). The 
effects of transformational leadership on teacher 
attitudes and student performance in Singapore. 
Journal of Organizational Behavior, 16, 319–333. 
Lukitasari, V.W. (2014). Pengembangan Model Penilaian 
Kinerja Sumber Daya Manusia Pada Organisasi Non 
Pemerintah X Di Yogyakarta. Thesis. Program Studi 
Magister Manajemen Program Pascasarjana, 
Universitas Atma Jaya Yogyakarta 
Mowday, L. W. (1979). The Measure of Organizational 
Commitment. Journal of Vocational Behavior, 14, 224-
347. 
Omoto, A. M., and Snyder, M. (1995). Sustained Helping 
Without Obligation: Motivation, Longevity of Service, 
and Perceived Attitude Change Among AIDS 
Volunteers. Journal of Personality and Social 
Psychology, 68 (4), 671-686. 
Porter, L. W., Steers, R. M., and Boulian, P. V., (1973). 
Organizational Commitment, Job Satisfaction and 
Turnover Among Psychiatric Technicians. Journal of 
Applied Psychology, 1973 (16), 151-315. 
Serrano, I. R. Civil Society in the Asia-Pacific Region. 
CIVICUS. Washington, D.C., USA., 1994. 
Sheldon, M. E. (1971). Investments and Involvements as 
Mechanisms Producing Commitment to the 
Organization. Administrative Science Quarterly, 16 (2), 
143-150. 
Shore, L. M., Barksdale, L., and Shore, T. H. (1995). 
Managerial Pereptions of Employee Commitment to 
The Organization. Academy of Management Journal, 
38 (6), 1593-1615. 
Sinaga, A. (2007). NON GOVERNMENTAL 
ORGANIZATION, Makalah. Disajikan pada Kamp 
Mahasiswa Regional Sumbagut, Perkantas Medan, 
pada Agustus 2007 
Teegen, H. Doh J.P., and Vachani, S. (2004). The 
Important of NonGovernmental Organization (NGOs) 
in Global Governance and Value Creation: an 
International Business Research Agenda. Journal of 
International Business Studies, vol 35, issue 6, 463-483