Electronic SupplementaryMaterial

  1. Experts’ rating questionnaire (English version)

Section 1: Impact categories

Instructions:In this section we would like you to rank the following impact categories for social life cycle assessment of palm oil biodiesel. Please rank the following categories from the one you think very important to least important with, where rank 1 means very important and 5 means least important

Impact Categories / Ranking
A / Human rights
Example: free from forced labor
B / Working conditions
Example: fair salary
C / Cultural heritage and community development
Example: respect on cultural heritage and local wisdom
D / Social-economic repercussion
Example: local employment
E / Governance
Example: fair competition

Section 2: Impact category A (human rights)

Instructions:In this section we would like you to rank the following criteria for impact category A (human rights) for social life cycle assessment of palm oil biodiesel. Please rank the following categories from the one you think very important to least important with, where rank 1 means very important and 3 means least important

Criteria / Ranking
A1 / Free from the employment of child labor
A2 / Free from the employment of forced labor
A3 / Equal opportunities, free from discrimination

Section 3: Impact category B (working conditions)

Instructions:In this section we would like you to rank the following criteria for impact category B (working conditions) for social life cycle assessment of palm oil biodiesel. Please rank the following categories from the one you think very important to least important with, where rank 1 means very important and 5 means least important

Criteria / Ranking
B1 / Freedom of association and collective bargaining
B2 / Fair salary
B3 / Decent working hours
B4 / Occupational health and safety
B5 / Social benefit

Section 4: Impact category C (cultural heritage)

Instructions:In this section we would like you to rank the following criteria for impact category C (cultural heritage and community development) for social life cycle assessment of palm oil biodiesel. Please rank the following categories from the one you think very important to least important with, where rank 1 means very important and 8 means least important

Criteria / Ranking
C1 / Land acquisition, delocalization, migration
C2 / Respect on cultural heritage and local wisdom
C3 / Respect on customary right of indigenous people
C4 / Community engagement
C5 / Safe and healthy living condition
C6 / Access to material resources
C7 / Access to non-material resources
C8 / Transparency on social/environmental issues

Section 5: Impact category E (governance)

Instructions:In this section we would like you to rank the following criteria for impact category E (governance) for social life cycle assessment of palm oil biodiesel. Please rank the following categories from the one you think very important to least important with, where rank 1 means very important and 3 means least important

Criteria / Ranking
E1 / Public commitments to sustainability
E2 / Fair competition
E3 / Free from corruption
  1. Calculation for weighting

Weighting was calculated using the following step. As an example, the first section of the questionnaire (impact categories) asks that experts assign rank from 1 to 5 for each of the five categories, in which 1 means most important and 5 means least important. Later on for the weighting calculation purpose, this ranking was turned backwards, in which the most important is marked as 5 and the least important as 1. The weights of each impact category or criterion were calculated using the operation is given in Table 1. The weights should sum up to 1.00.

Table 1 Weighting process

Expert → / E1 / E2 / / En / Weight
Impact category or criterion

C1 / R11 / R12 / / R1n /
C2 / R21 / R22 / / R2n /
Cm / Rm1 / Rm2 / / Rmn /
  1. Results

Table 2 Results from stakeholders' survey

Impact / Human rights / Working conditions
Criteria / A1 / A2 / A3 / B1 / B2 / B3 / B4 / B5
Expectation / 6.57 / 7.00 / 7.00 / 6.10 / 7.00 / 7.00 / 7.00 / 5.87
Perception / 6.50 / 7.00 / 7.00 / 3.77 / 3.60 / 6.80 / 6.23 / 4.57
Gap-mean / -0.07 / 0.00 / 0.00 / -2.33 / -3.40 / -0.20 / -0.77 / -1.30
Gap-SD / 0.58 / 0.00 / 0.00 / 1.79 / 2.21 / 0.41 / 0.77 / 1.51
Impact / Cultural heritage
Criteria / C1 / C2 / C3 / C4 / C5 / C6 / C7 / C8
Expectation / 6.50 / 6.53 / 6.40 / 4.50 / 6.53 / 6.70 / 6.13 / 5.17
Perception / 2.23 / 1.80 / 1.70 / 1.93 / 1.70 / 1.30 / 1.57 / 2.23
Gap-mean / -4.27 / -4.73 / -4.70 / -2.57 / -4.83 / -5.40 / -4.57 / -2.93
Gap-SD / 1.05 / 0.78 / 0.65 / 1.22 / 0.65 / 0.62 / 0.77 / 1.23
Impact / Socio-econ. repercussion / Governance
Criteria / D1 / D2 / D3 / D4 / D5 / E1 / E2 / E3
Expectation / 6.70 / 6.60 / 6.30 / 6.37 / 6.10 / 6.80 / 6.50 / 6.73
Perception / 6.57 / 6.23 / 5.60 / 5.57 / 5.67 / 5.90 / 5.57 / 5.63
Gap-mean / -0.13 / -0.37 / -0.70 / -0.80 / -0.43 / -0.90 / -0.93 / -1.10
Gap-SD / 0.57 / 0.81 / 0.99 / 3.08 / 0.77 / 1.90 / 1.76 / 1.94