There are rules for this kind of words: male: singular -er ; plural -er/ female: singular -erin; plural -erinnen. Therefore, "Die Arbeitgeberin bezalen" is not grammatically correct. If you want to say the female employers are paying, it would be "Die Arbeitgeberinnen bazahlen"
Eve-Lass (I assume the name is a typo and not just gratuitous vulgarity) is either not quite right or overly pedantic, or some combination of the two.
"Zahlen" as a verb (a usage more clearly indicated by not capitalizing) means "to pay" (See Wiktionary), although "die Zahlen" does in fact mean "numbers" or "numeral" or "figure".
Confusingly, if one were to use numbers, i.e., to count, then we would say "Sie zählen." (Note the umlaut.)
It may also be helpful to note that "eine Zahl" represents a value, whereas "eine Nummer" is an identifier.
Some examples may help:
- Zahlen : 12 eggs, 3 stooges, 10 commandments, 3.14159265 pies
- Nummern : 221B Baker Street, 867-5309 (for a good time), #99 #10 (Gretzky amp; Pele)
And then there are Ziffern : digits (0-9 in decimal, 0-1 in binary, 0-7 in octal, 0-F in hex, etc)
But to get to the original question--when does one use bezahlen rather than zahlen--I found the following at german.stackexchange.com:
That is a tough one, I find me using it interchangeably. However there seems to be a somewhat directed preference:
I would state it as bezahlen expresses the intent and the process of paying. Whilst zahlen only states the intent.
"Wie möchten Sie zahlen?" / "How would you like to pay?"
"Ich bezahle bar." / "I'll pay cash."
The first sentence inquires the intent. The second sentence signals the intent and the payment immediately after.