By the way, is your family really starving that you have to get your salary right away. Haven't you save enough money to survive for "a several days"? I don't think so. Because if so, you should definitely change your job
I can tell you even more than that
Quite a few families are not just living paycheck-to-paycheck, they are often living on debt (which is kind of modern day slavery). This is not about starving of course (though your mileage may vary), but essentially many people spend at least part of their lives in the red territory, so to speak. And this may last for decades, especially if you buy things (e.g. a house) on borrowed funds. And in such cases, a few days when you are not paid at the right time or day may make all the difference. And I'm not even talking about cases of insane consumerism