Oliver was in his office alone, he had so much work to do after him and Sammy had both taken two days off. It was always the workload that made him fear missing the office, not even about money or loss of clients. He just disliked coming back to the office and meeting a lot of files on his desk, maybe it was time he hired someone to run this place.
Maybe he could make Sammy his manager and get about two other people to assist him, then he can take his long deserved break from the company. He would have done that a long time ago but he was getting buried with work on purpose, so that he can avoid thinking about Aria.