I have one colleague in my team who resigned from Petronas and joined us recently..initially was surprised why he left Petronas since everyone is trying to get in..so I asked him and he told me him being the only non bumi ( indian) in his team, he was bullied by his superior.. the segregation of work wasn't fair and imagine senior exec work pass to him while his senior all goyang kaki and he had to stay back until night to do their work.

During appraisal time also he was given below average score while his senior all bumi given good ratings..eventually he resigned due to toxic work culture..he was in procurement department..so yeah