I had two workers working for me until recently both were on self employed basis it worked well for a while but my son in law who was full time got greedy and has now started up on his own. Last year myself and my partner took ourselves off on a 14 week trip travelling around the world.
I left him in charge of the business which included the software Squeegee App. Everything went as good as I expected until a few months after getting home. To cut a long story short he could see all incomings but not outgoings so he thought to himself that I must be raking it in. I was paying him £140 a day too.
He also thought that because I was coming up to my retirement age he could text my customers to tell them that I had already retired and the "he" was taking over. He also included in his message to them his bank details. We never spoke for months it caused a massive rift in our family.
This sort of thing happens 9 times out of 10 when employing. Its human nature to resent your boss after a few years when you realise how much money your making for him/her....
I too have had ex employees go round my customers houses telling them I'd packed in and even collected my money off them! Luckily it was only a few jobs and they didn't fall for it a second time....
Underhand tactics never work in the long run though. Not one single window cleaner who have tried to nick my work or undercut me over the years are still in business.....😄👍
I didn't take one of my employers windows when I left, I still have a good relationship with him now. He has 19 guys so you can imagine how much work he has.
We only see the end product, he would have been in the position I found myself in at the start with not enough work etc. It's absolutely scum bag behaviour trying to steal work from the very person who was good enough to give you a job in the first place.
As for the son in law, I wouldn't have spoken to him again, and your daughter should have stepped in and stopped it too. Hand on heart, id have paid the local lunatics a few hundred quid to break the son in laws arms.
When a leaflet drop goes through the people I do, they always come out and show me them, I tell them I don't own the street and they can do what they like, but they aren't a threat to me as no one changes.
What is a threat though, is if someone you employ does the same run all the time. Over time, if they wanted to, I reckon they could take atleast 80% of that work if they really wanted too.