Overall while payment may be a little slower from businesses/organizations due to their internal accounting procedures or being asked longer payment terms (Net 60, or 90 vs my usual Net 30) I rarely have issues getting paid. For larger outfits whomever is cutting the check, it's not actually their money, so it's as not 'painful' for them to part with the money.
Now individuals are another story. Generally people pay as agreed. There was one client, good guy overall but I'd have to chase him for a measly $30 invoice *every month*. By the time he paid last month's I'd be sending a new one out. That was really aggravating. I rarely have to chase invoices for 10 times that amount. We still BS here and there but I was happy to move him to another web host.
Now individuals are another story. Generally people pay as agreed. There was one client, good guy overall but I'd have to chase him for a measly $30 invoice *every month*. By the time he paid last month's I'd be sending a new one out. That was really aggravating. I rarely have to chase invoices for 10 times that amount. We still BS here and there but I was happy to move him to another web host.