Thirteen states require an excuse in order to vote absentee and have no early voting: election day is it.
Can’t get off work? Can’t afford to not go to work? Tough luck.
Have no one to babysit the kids after work? Tough luck.
Need to go out of town at the last minute? May be tough luck for that, too. One state deadline (Rhode Island) for requesting an absentee ballot is four weeks before the election.