Jan 18 (Reuters) - Amazon.com Inc:* AMAZON WILL BE NOTIFYING EMPLOYEES IMPACTED BY DECISION TO REDUCE WW STORES CORPORATE HEADCOUNT - AMAZON MEMO* AMAZON EXPECTS ALL NOTIFICATIONS IN THE U.S. ,CANADA, AND COSTA RICA TO BE COMPLETED BY THE END OF JAN 18 - AMAZON MEMO* AMAZON WILL BE NOTIFYING EMPLOYEES IN CHINA AFTER THE CHINESE NEW YEAR - AMAZON MEMO* AMAZON SAYS MAJORITY OF ROLE ELIMINATIONS ARE IN OUR WW AMAZON STORES BUSINESS AND PEOPLE EXPERIENCE & TECHNOLOGY ORGANIZATION - AMAZON MEMO Further company coverage: