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LABOR COSTS (Included Cost of sales and Selling, General and Administrative expenses)
 12 Months Ended
Dec. 31, 2017
Labor Costs [Abstract]  
LABOR COSTS (Included Cost of sales and Selling, General and Administrative expenses)
LABOR COSTS (Included Cost of sales and Selling, General and Administrative expenses)
 
Year ended December 31,
 
2017
 
2016
 
2015
 
 
 
 
 
 
Wages, salaries and social security costs
849,354

 
698,825

 
754,063

Termination benefits
25,783

 
27,048

 
30,888

Post-employment benefits (Note 21 (i))
28,213

 
27,758

 
29,390

 
 
 
 
 
 
Labor costs
903,350

 
753,631

 
814,341


As of December 31, 2017, 2016 and 2015, the quantity of employees was 21,335, 16,725 and 16,739, respectively.