How long do you leave your teens for while working ?

[Dumbledorker]

I have ds13 1/2 and 2 younger dd who go stay with their exh 3 nights a week. I'm returning to work and just wondered how long other parents leave their 13/14 year olds home alone for while out working ?
I'm worried about agreeing to set shifts and him being alone too long either after school or all day in the holidays. How does everyone else do it with kids this age and how long is too long?
He is absolutely happy enough to have the house to himself. He loves the independence and freedom and does a few chores then will have a friend round or just play on his console, watch TV or read. I have tried and tried to no avail to get him to join clubs eg. Scouts, youth club ,cadets etc. Hes just not interested at all. Hes very trustworthy too and mature for his age. He says hes happy for me to go to work and it wont bother him. I'm just worried and not sure ...

From age 11 I took a (roughly) two hour bus journey to school and two hours home again on my own. In the winter I sometimes didn't get home until 6. If I could do that I think your very trustworthy 13/14 year old will be fine in his own home alone while your at work.

I know people who work full time and left their 12 year old alone every day over half term and other holidays. I also know a couple who left their 14 and 12 year for month while they went to Asia. The latter was extreme but a 13/14 year old should be ok. Just make sure he knows what to do should there be an emergency. Neighbor or other just in case?

Luckily my best friends live next door and he has his iPhone too if he needs me. The job is domiciliary care work so I will be out in our district anyway so if an emergency arose I would be alright to jump in the car and get home quick in a serious situation. I just worry as I have been accused of neglecting him before when I went out on a rare occasion for two hours to my school reunion. Because I posted a photo on social media my ex mother in law decided to message him and state that I was irresponsible and that she wasnt happy with me all in a text to him. I ended up ringing social services to ask if I had done anything wrong but they assured me I hadnt as long as he was happy and safe. So now I panic if I'm doing something wrong all the time its exhausting.

My mum left me alone all weekend from around 14