At the Office
Prepositions of Place, Similarity and Function
Use 'in' with countries, cities, towns and regions.
Example:
My client has assets and liabilities in two countries.
In Michigan, a debtor's privacy rights are revocable in the case of delinquency.
Use 'at' for place in a city, town or village.
Example:
I am the endorser at my company.
We can discuss the production costs at the coffee shop.
Like and As
Use 'like' as a preposition to express that two are objects are similar in some characteristic.
Example:
These are outstanding credits like the ones I sent out last week.
Having majority interest in the company is like running your own baseball team.
Use 'as' to express the function that a person takes in an organization.
Example:
Tom, in his role as the project manager, is responsible for the due diligence.
Sam works as a portfolio manager.