In a lengthy message posted on his Instagram account, Messi also took another swipe at the Barca board, led by president Josep Maria Bartomeu, whom he accused of undermining the players during recent negotiations.
Other Spanish clubs are expected to follow suit in applying temporary pay cuts, as football's hiatus due to the coronavirus pandemic leaves a number of them fighting for financial survival.
Atletico Madrid have said the club will impose salary reductions on staff whose hours have been affected while Espanyol have also confirmed pay cuts, although for sporting staff only.