My husband works outside the construction site. What if he doesn't reply?

First of all, you can consider talking to your husband and asking him why he hasn't returned your messages. He may not be able to reply to your message for the time being because of busy work or other reasons. If you find that his behavior is abnormal or makes you feel uneasy, you can communicate with him and express your concern and worry so as to find a solution to the problem.

Secondly, you can also try to change your behavior to improve communication. For example, you can adjust the time of sending messages to avoid sending them during office hours, or you can communicate with him in advance what you need to contact and ask him to arrange time to reply to your messages in advance.

Finally, if this problem persists, you can also consider seeking the help of a marriage counselor or other professionals to find a better solution. Remember to keep an open mind, respect each other's thoughts and feelings, and work together to solve problems.