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| 1987, April |
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| Mikhail Gorbachev and Jaruzelski signed an accord on Soviet-Polish cooperation. | 1 |
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| June 8–14 |
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| Pope John Paul II attracted large crowds during his third visit to Poland and gave vocal support to the banned Solidarity. | 2 |
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| Oct. 10–24 |
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| Prime Minister Messner presented an economic reform proposal involving greater autonomy for state-owned enterprises, expansion of private labor, a reduction in bureaucracy, and increases in salaries and prices. | 3 |
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| Nov. 29 |
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| A referendum on reforms that called for economic austerity was not endorsed by voters. | 4 |
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