The document summarizes concerns from Standard & Poor's about rising levels of covenant-lite loans, particularly 'B' rated loans. There has been a large increase in covenant-lite issuance in recent years, with over half of 2014 covenant-lite loans being 'B' rated. While covenant-lite loans have historically seen slightly lower defaults, recoveries are also slightly lower. If economic conditions deteriorate, default rates for covenant-lite and traditional loans could spike above past crisis levels, especially for 'B' rated loans which have higher inherent risk. The proliferation of risky 'B' rated covenant-lite loans leaves borrowers vulnerable if a future liquidity crisis restricts refinancing options.