No. It's not necessary. Capitalize it only when it forms part of the proper noun.
Examples:
Starbright Corporate Office
When you are writing about a circular room oval officedoes not need to be capitalized - when you are referring to the room in the White House - Oval Office should be capitalized.
It depends. If you are saying 'office' indirectly, i.e. in general, then no. However, if saying 'office' directly, i.e. one in particular, then yes, you do.
Have should be capitalized if it is the beginning of a sentence. Summer should not be capitalized.
It should only be capitalized if it forms part of a title.
yes they can
I look forward to speaking with someone from your corporate office next week.
Yes, "Dr. Chin's Office" should be capitalized as it is a proper noun.
No, "office manager" should not be capitalized unless it is being used as part of a specific job title, in which case it would be capitalized as in "Office Manager."
Yes, "Mission" should be capitalized when it is referring to a specific mission, such as a corporate mission statement or a strategic mission plan.
Yes, "Home Office" should be capitalized when referring to a specific government department in countries like the UK. However, if it is used more generally to refer to a workspace within one's home, it does not need to be capitalized.
As a proper noun denoting a specific corporate entity; yes.
When you are writing about a circular room oval officedoes not need to be capitalized - when you are referring to the room in the White House - Oval Office should be capitalized.
The term "Post Office" should be capitalized when it refers to a specific government agency or building, such as the United States Postal Service. However, if it is used in a general sense to refer to any postal service or office, it should not be capitalized. Additionally, when the term is part of a proper noun, such as "Main Street Post Office," it should also be capitalized.
Yes it should be capitalized.
It is if you mean the Oval Office in the White House.
Sheriff is capitalized. Office may or may not be.
No it shouldn't be capitalized.