implementation of good Islamic business
governance. According to Shahul (2001) that Islamic
bank as a business institution that runs based on
Islamic principles should not be directed to generate
maximum profit. According to statistical data of
Islamic bank (Financial Services Authority, 2018),
the position of Islamic bank assets reached IDR
429.36 trillion and financing value is still moving at
double-digit level of IDR 289.99 trillion. Growth is
inseparable from good governance to maintain
welfare and security for customers and shareholders.
This study can obtain empirical evidence of the
mutual relationship between good Islamic business
governance and voluntary disclosure in the annual
report of Islamic bank in Indonesia period 2011-
2017 using ganger causality.
2 LITERATURE REVIEW
Governance is a new form of new public
management regulation. Corporate governance is the
alignment between the interests of corporate
management with other stakeholders and integrates
the goals between management and owners,
incentives, monitoring and control (Nofianti and
Ardi, 2014). Voluntary disclosure is a phrase that the
company provides outside the applicable provisions.
Lys, et. al, (2015) said that in theory companies that
implement voluntary diclosure indicate good news
or good performance by releasing sustainable
financial statements to differentiate from
competitors.
The relationship between the disclosure of non-
financial sustainability and sustainability
performance remains controversial when researchers
use the theory of voluntary disclosure and legitimacy
theory to explain its relationship to sustainability
performance (Hummel and Schlick, 2016). Whereas
according to Hidayah (2008) said that accurate and
detailed disclosure will provide a picture of the
actual performance of the company. Large
companies are more likely to get big risks, including
Islamic bank. According to Darmadi (2013)
conventional banks or Islamic banks are also at risk
due to the complex nature of their capital structure,
where banks present many short-term claims and
relative to customer and depositors' trust.
Hypothesis: There is a one-way relationship
between good Islamic business governance and
voluntary disclosure.
3 RESEARCH METHODOLOGY
3.1
Population
Research approach used in this study is quantitative
approach which aims to test hypothesis with
measured data and produce generalizable
conclusion. The population in this study are the
annual financial report of Bank Syariah Mandiri,
Bank Muamalat Indonesia, Bank Negara Indonesia,
Bank Rakyat Indonesia, Bank Bukopin Indonesia,
Bank Mega Syariah Indonesia, and Bank Central
Asia Syariah for the period 2011-2017 December,
namely 49 financial reports.
The sample in this study is taken by purposive
sampling, where the sample is taken if it meets the
following criteria: First, the Islamic banks that
reported the complete financial period December
2011-2017. Secondly, 7 Islamic banks have the
largest assets in December 2017. Thirdly, Islamic
banks are still operating in Indonesia during the
period of December 2011-2017 (Bank Syariah
Mandiri, Bank Muamalat Indonesia, Bank Negara
Indonesia, Bank Rakyat Indonesia, Bank Bukopin
Indonesia, Bank Mega Syariah Indonesia, Bank
Central Asia Syariah).
3.2 Definition Operational of
Variables
3.2.1 Dependent Variable
Voluntary disclosure is the delivery of information
provided voluntarily by companies beyond the
obligated disclosure established by Bank Indonesia
(Meilani, 2016). The calculation of the voluntary
disclosure index refers to the study (al Bawat, 2015)
by providing a score of "1" for the item disclosed
and gives a score of "0" for an undisclosed item of
56 indicators.
3.2.2 Independent Variable
Good Islamic business governance is an important
element in maintaining the sustainability of business
growth (Meilani, 2016). Businesses that run with a
good governance concept will survive in the long
run. According to the national committee on
governance policy (2011) states that the ability to
maintain business power is very important for all
parties so that good governance for Islamic banks
can be illustrated by the consistency of the
implementation of good Islamic business
governance. According to Jumansyah and Syafei