Central planning agencies in the Soviet Union found it increasingly difficult to assert authority as political changes weakened the economics of perestroika. Major economic disturbances like miners' strikes spread across the country in the late 1980s and early 1990s. By 1990, it was clear there was a major economic crisis and reforms were needed to the Soviet system to prevent disaster. A team led by Stanislav Shatalin proposed economic reforms, but Gorbachev rejected the Shatalin Plan and instead implemented a compromise package in October 1990 that satisfied few people.