Idk why but I’m imagining this lady in the van as a disheveled Frances McDormand

Agree with top comment on having another guy in place. But I also understand the challenge around finding qualified people these days. Clearly there is incentive for him to leave and go elsewhere, what is it? Better pay? Under the table? Pay on day? Regardless figure that out and decide on whether you can offer better since he is so valuable to you. If he is a friend and loyal employee he should be willing to have this conversation with you

As a contractor who previously had no web presence, I can say that it is imperative that you make a website for reputability. Most construction folks lean on word of mouth lead generation and overlook website legitimacy. If you already have a step ahead and are taking off, this is how you widen the gap. PM me if you have more questions or specifics I’d be happy to help