At your job, what are the rules for calling in sick, and do you get a hard time about it, or is it accepted without question(s)?

At your job, are there rules or parameters for calling in sick? Do you have to give a certain amount of notice, for example, you must call in ____ minutes before the start of your regular workday? Or can you speak to anybody, or does it have to be your boss or any boss? If you do call in sick, does the boss or someone there give you a hard time or is it just accepted (ok, feel better, bye)?