It is possible to own your own business and only work a few hours a day (or week! see The Four Hour Workweek), but on average, most small-business owners or self-employed people work long hours. That said, many are highly satisfied with their work.
Regardless of the particular job, government jobs tend to be 9-5, 40 hr/week jobs. Federal government has the best benefits, followed by state, followed by city, maybe followed by county. It is rare to get fired from such jobs. But the pay is not so high, and only increases slightly over the years, unless you take a management position.
Health care professions such as pharmacists, physician assistants and nurse practitioners are paid well, but I’m not sure about their hours — it depends on the jobs, I’m sure. They take several years of post-college study. Nurses tend to work long (12 hours) shifts.
If you know a trade, such as plumbing or carpentry, then you can often be self-employed and work when you want (though it’s hard to turn down any offers you get). This can leave time for Torah study and family.