This paper reconsiders the cost of business cycles under market incompleteness. Primarily, the authors focus on the heterogeneity in the cost among different skill groups. Unskilled workers are subject to a much larger risk of unemployment during recessions than are skilled workers.
Link
http://artsandscience1.concordia.ca/economics/pdf_word_excel/working_papers/05002tm.pdf#search=%22Costs%20of%20Business%20Cycles%20for%20Unskilled%20Workers%22