Effective Division of Labor. Specialization of labor allows managers to assign tasks based on the skills and preferences of workers. Suppose a person who excels at math works in the accounting department, and a person who loves dealing with customers works in sales.
, works at U.S. Postal Service. The current postage needed for an international postcard stamp is $1.15 for a standard shaped and size one, in fact it's the same price for a letter of 1oz or less. The USPS lowered the rate from $1.20 back to $1.15 in middle of 2016.
For Hallmark cards that state Additional Postage Required most of the time a $0.68 cent stamp (or two $0.49 cent stamps) will be sufficient, but we recommend checking with the Post Office to confirm.