Never get comfortable with something that isn't in writing. This is a perfect example. Many people are used to getting paid a day or two early. That has been the precedent for years. The company is under no obligation to pay you until the 15th or the 30th, and remember if those pay dates fall on a Sunday, you will get paid the day after.

If you have bills that are due to be paid on the 14th or 15th, I would recommend paying those earlier because your check might not come until the 16th.

I had to rearrange the way a paid bills when I first started here. Almost all of my payments were due in the first week of the month which was immediately after my lowest check. It took a little bit of planning to even things out.