A lot of businesses, employees, contractors, and freelancers seem to be either all for remote teams or completely against it. While remote work is an excellent way to work, it isn’t for everyone. There are plenty of understandable disadvantages of working from home. But they don’t necessarily overshadow the disadvantages of co-located teams, either.
The ability to interview them in person a number of times and carry out a trial to see if they are a suitable fit for you. A trial is a great no risk way for all parties to see if the assistant is the right person for the job. It is a very personal job working closely with the employer so it is very important to work out if both parties are going to be happy before making a long term commitment.
Having a virtual office can cause employees to miss out on the social advantage of being in an office. Virtual employees can suffer from the "out of sight, out of mind" effect, in which they could be passed on for promotions or opportunities because they weren't in the office for management to consider them. They also can miss out on networking opportunities which could lead to other options in the company.
I doubt many companies like or prefer that employees work from home. We allow the policy in order to be able to attract employees who would otherwise go elsewhere. We are heavy users of Slack, Confluence and other collaboration tools that make working at home more productive, but they cannot replace the serendipitous interactions that occur while hanging out by the nitro-coffee keg. - Manuel Vellon, Level 11