This study aims to validate the Workplace Friendship Scale (WFS) developed by Nielsen, Jex, and Adams (2000) in the Indonesian population. The WFS measures two dimensions of workplace friendship: Friendship Opportunity (FO) and Friendship Prevalence (FP). A total of 210 employees from various organizations in Indonesia participated in this study. Confirmatory Factor Analysis (CFA) was conducted to examine the construct validity of the scale. The initial two-factor model did not meet the goodness-of-fit criteria (CFI = 0.876; TLI = 0.842; RMSEA = 0.080). After modification by removing problematic items and dimensions, the final model with one factor (Friendship Prevalence) consisting of four items showed acceptable fit (CFI = 0.964; TLI = 0.893; SRMR = 0.031). The reliability coefficient for the final scale was adequate (Cronbach's alpha = 0.794; AVE = 0.497). The results suggest that the modified WFS with four items measuring Friendship Prevalence is a valid and reliable instrument for measuring workplace friendship in the Indonesian context.
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