In a year-end message to the nation Friday, President Augusto Pinochet announced a 10 percent increase in the minimum legal salary of $57 a month earned by nearly one third of Chile's 4 million workers.

The 73-year-old president and army commander said in a speech over national radio and TV that a 10 percent wage increase also will be granted to Chile's 500,000 government workers, with both increases effective Feb. 1.He said the wage increases were made possible by the "economic equilibrium and the firm economic growth" achieved by his 15-year-old military government.

Pinochet asked Chileans to unite to face "the important challenges that we will meet in the new year."