TY - JOUR AU - Rotemberg,Julio J. AU - Woodford,Michael TI - Imperfect Competition and the Effects of Energy Price Increases on Economic Activity JF - National Bureau of Economic Research Working Paper Series VL - No. 5634 PY - 1996 Y2 - June 1996 UR - http://www.nber.org/papers/w5634 L1 - http://www.nber.org/papers/w5634.pdf N1 - Author contact info: Julio J. Rotemberg Graduate School of Business Harvard University, Morgan Hall Soldiers Field Boston, MA 02163 Tel: 617/495-1015 Fax: 617/496-5994 E-Mail: jrotemberg@hbs.edu Michael Woodford Department of Economics Columbia University 420 W. 118th Street New York, NY 10027 Tel: 212/854-1094 Fax: 212-854-8059 E-Mail: mw2230@columbia.edu AB - We show that modifying the standard neoclassical growth model by assuming that competition is imperfect makes it easier to explain the size of the declines in output and real wages that follow increases in the price of oil. Plausibly parameterized models of this type are able to mimic the response of output and real wages in the United States. The responses are particularly consistent with a model of implicit collusion where markups depend positively on the ratio of the expected present value of future profits to the current level of output. ER -