Direct vs Indirect

I was working at Rockhoppers Restaurant and my boss would only use direct language. I understand that managers are busy and they want to get their point accross without wasting anytime, but I feel bosses should incorporate indirect language as well. He would make threats about being late or having good costumer service, but there was never a mention of positive encouragement. He would post notices about the servers needing to cash out after they cleaned their sections, but never acknowledged when the servers would do this and have their section completely clean. As a result, he was not well liked and the work environment was not a positive one. So, in conclusion both methods (direct/indirect) are useful, but should be balanced.