I watched this happen in my business. We hired a virtual assistant to manage our sales process. The assistant was very good, so every task landed on his plate. Emails. Cold Calls. Meetings with clients. Supervising projects. Passwords. Software. Fires. All of it.
A few months in, that virtual assistant was running at one hundred percent capacity and basically carrying the company. And when he left, we all suffered from it.
What I should have done: promoted him to "senior manager", hired a second VA once he hit 75% capacity, never let him touch one hundred, and had him train the new hire to take over his work.
It would have been a double win.
1. The VA is happy because he got the promotion.
2. I am happy because I'm not carrying all the risk on one person.
So what's the lesson here?
The SECOND your best person starts taking on too much, stop loading their plate and start building the next one. Hire the second person before the first one is maxed out, NOT after they quit.
One is the worst number in business. If losing someone for two weeks would break you, you already have your answer.
You should never have to say "I couldn't survive without this person." You should be able to say "I'd hate to lose them" and still be fine the next morning.
Thank you for your attention to this matter.