This is my first post in this forum. I'm feeling annoyed and not sure I should be.

My fiancé travels quite a bit for work. We do not live together (if that matters). We've been together for almost 5 years and are in our 4'0's. I'm pretty easy going and never demand that he constantly keep in touch when he's traveling because I know days can be super busy. At least that's how they are when I travel. And speaking of when I travel, I always try to call/text/chat him when I'm in for the evening even if it's late for him. I've never told him it bothers me, but there are a lot of times where he'll call in the afternoon/early evening and then I won't hear from him until the next day.

This is one of those times. He's been traveling for the last week. He called me yesterday morning around 10:30am my time (he is currently 3 hours ahead of me). I sent him an email about an hour later with no response (although I didn't really expect one - figured we'd discuss it this weekend). I called him later that evening (7:15pm my time) and then sent him a chat about 8:30 my time to say I was going to bed soon. He never bothered to respond. Even if he's at a client dinner (and hello, I called him at 7:15pm which was 10:15pm his time), he could at least send me a quick text or something.

I'm not the type where I demand that he constantly check it, but it's now been 24 hours since I last heard from him and I'm starting to get annoyed. Would you be?

It depends, but probably not.

Re-read that and imagine your girlfriend was telling you this about her boyfriend. From what I read it shows that you expect him to check in at least daily. It really shows that you do demand that he constantly check in.

There are several reasonable explinations for why he hasn't contacted you. Including losing or breaking his cellphone. Leaving it in his hotel room and not calling you. Could be he went out and didn't see you called. I am sure you will find out the story when you get in contact with him.

There are two questions that you're asking without actually vocalizing:
1). Is he okay? IE not missing, hurt, dead, or other wisely incapacitated.
2). Is he cheating on me?

I think you're being a little too paranoid and are getting annoyed/upset about nothing. You've known him for almost 5 years, and are over 40. You're both responsible adults. Talk about it when you get a hold of him. Be honest with your expectations. I get the feeling that you're talking but not really communicating.

Disclaimer: I am a guy.

What is the acceptable amount of times he should call you so that it assures you your entire relationship is not doomed? If you say 4 and one day he only calls 3 times, does the relationship go back to doomed status?

Ridiculous questions maybe, but most men do not need that constant reassurance of hearing that voice a couple of times a day. As Craven said, there are numerous reasons he might not have called, and you are jumping to doomed status without knowing the reason.

Obviously not calling the whole trip would be unacceptable so you need to find a balance.

You are annoyed, but not worried ? If you don't insist he check in with you constantly, why are you annoyed.

I would be worried.

I agree about worried, but just a little worried.

"..when I travel, I always try to call/text/chat him when I'm in for the evening even if it's late for him." Huh? That doesn't even make sense. If it's late for him, wouldn't he have a right to be annoyed?
"I've never told him it bothers me, but there are a lot of times where he'll call in the afternoon/early evening and then I won't hear from him until the next day." Wow, that makes no sense either. You just explained that you are aware of time zones and busy schedules.

I'm a woman. I have the same dread of overdoing contact that is mostly ascribed to men. If this bothers you and you haven't said anything in five whole years (!), something isn't right. Next time you are together (bodily) ask if he minds a contact range limit. I think once a day is plenty. And work out a time difference limit too. I would be inclined to waste the last minute of each contact working out a 2 hour window for the next day's contact.

If you've never told him that this bothers you, than you have no right to be annoyed.

You state that you're easygoing, that you've never asked him to contact you every day when he travels, you realize that he's likely busy. Then you go on to say that when you travel you contact him multiple times a day.

If you want him to do what you do, you have to tell him. If you don't tell him then you have no right to be annoyed with him because he doesn't know that you expect him to contact you a few times a day when he's traveling.

It's really not fair to be annoyed at your partner about something you've obviously always pretended to be okay with.

After 5 years you should have a agreement between you that works for you both and you don't have to be annoyed.

I agree, after 5 years, he should know what you like and do not like,
You should know how he is.

And what?? If he with a client, he does a quick text to you..? Not really, unless he has some super casual business plan.