Starbucks said Friday it plans an unspecified number of layoffs as it restructures its corporate staff.

In a letter to employees, Starbucks Chairman and CEO Brian Niccol said the Seattle coffee giant needs to ensure all work has a clear and accountable owner who can make decisions. The company also needs to reduce complexity and silos.

Starbucks has approximately 16,000 employees working in corporate support, roasting, distribution, warehousing and store development, including 10,000 in the U.S. and 6,000 in other countries. Starbucks said the layoffs will come from corporate support staff, but it won’t say how many people work in those roles.

The company employs a total of 361,000 people worldwide. — Associated Press