I was one for about a year/eighteen months, stopped about three years ago.
It was honestly pretty awful.
You get a set route, with no idea whether you’re going to have 28 parcels (which because you need to sort them and load up pays way under minimum wage) or 128 (which means if you rush you might get them all out in time)
You lose bonuses if you don’t get them all out in that day, which again takes you to under minimum wage.
Depending on your route, more than half his people you’re delivering to aren’t in, you get complaints if you leave them with a neighbour, complaints if you leave them in a shed or garage and complaints if you take them away to redeliver another day... you’re somehow supposed to just know what each person wants done with their parcel.
You get people ranting at you about how long something took to arrive when it’s literally arrived with you 2 hours ago...
You have to arrange your own cover if you want any time off, I know of people having being threatened with losing their route if they didn’t turn up after not managing to find cover... even when the time off was for things like their wife’s funeral. If your cover stuffs up or stops coming in, you also lose your route.
If the equipment they give you is faulty, you never get a replacement - but they’ll stop your bonuses if the faulty equipment can’t record that you delivered on time.
You get calls hassling you to go back out after you’ve finished to redeliver parcels to people who weren’t in when you attempted delivery earlier - especially if they paid for a certain time slot, you went for that time slot and they got in after you’d been.
Oh and the phone number on the cards... that’s your own mobile number you’re having to put through people’s doors...