1. Worse internal communication between project team and production team 2. Unsupportive colleagues > For self-sake and competitiveness, most of colleagues love to be a informer. > Emotional management 3. Unfriendly culture > Chur > Boss will “take care” of you when you have SL > Expect you to work overtime and have business chat during holiday / your leaves 4. No benefit > Well “law-abiding” employer > 5day work is a joke