B.M.
ask him what kind of husband he wants to be. Let him answer.
ask him what kind of dad he wants to be. Let him answer.
Then ask him if he thinks that's the kind of husband and father he is. See what he thinks. He may want to be involved and not know how. He may not realize how his absenteeism affects you. He may be fine with you doing all the work. He may be lazy. He may be overwhelmed.
Ask him what he thinks you should be and do as a mother to his children.... what is you "role". Ask him what he wants from a wife. His answers will be telling. Don't interrupt. Don't cry. Don't become angry. Let him figure out for himself that he is not doing all of his job.
If he doesn't..... THEN you have some decisions to make on what you will do. But FIRST you must listen to him.