Consider these first conditional sentences, please:
(1) If he doesn't do his work, he will get fired. (his boss will fire him)
(2) If he doesn't do his work, he would get fired. (his boss would fire him)
(1) and (2) do not refer to any particular time in the future, but any time after "he" has started the job. Are they both correct/natural? If so, Is there any difference between "will" and "would" here?
1) If he doesn't do his work, he will get fired. -- OK (future time). 1½) If he didn't do his work, he would get fired.
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1) If he doesn't do his work, he will get fired. -- OK (future time).
1½) If he didn't do his work, he would get fired. -- OK (general hypothetical time).
2) If he doesn't do his work, he would get fired. -- Mixed form; not recommended.