At the Office
Prepositions of Place, Similarity and Function
Use 'in' with countries, cities, towns and regions.
The appreciation of homes in Litchfield County has slowed.
Our client needs to evaluate assets and liabilities in the city of Atlanta for himself.
Use 'at' for place in a city, town or village.
We will meet you at the Citigroup building.
I am the endorser at my company.
Like and As
Use 'like' as a preposition to express that two are objects are similar in some characteristic.
These are outstanding credits like the ones I sent out last week.
Overdraft protection is like a safety blanket for your finances.
Use 'as' to express the function that a person takes in an organization.
Tom, in his role as the project manager, is responsible for the due diligence.
As an employee of the firm you are expected to perform due diligence.