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What does cob stand for in business?
COB in business stands for "close of business." It refers to the end of a business day and the close of the financial markets in New York City, which define U.S. business hours. It's used in business communications to set a deadline for a task to be completed by 5:00 PM Eastern Standard Time (EST).
Employers commonly refer to this time when establishing a deadline. For example, if a supervisor says to complete a task by COB on Friday, the assignment's deadline would be 5 p.m. EST Friday. COB is also the time that the stock markets close in New York City, which is typically why many business professionals regularly use and understand this acronym.
Some employers use COB interchangeably with similar acronyms, like the end of business (EOB), which typically has the same meaning. EOD stands for "end of the day," which refers to the end of the business day. Some employers may use EOD and COB interchangeably, but they have a few key differences. When supervisors assign tasks to complete by EOD, they're usually expecting employees to complete them by the end of the business day in their own time zone.
If you work with clients with offices in a different state, however, it may be best to use COB when mentioning the time you'll submit assignments or when you need any information from them. Since you're in different time zones, you can avoid confusion by using COB as a neutral time for both you and them to submit assignments or schedule meetings. This is typically a great option to use in this instance, as COB is a well-known acronym that most professionals regularly use.
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