A spouse in the dependent status attached to this classification is employment-authorized incident to status and may take a job. Children may attend school at any level, may not work, and cease to qualify as dependants at twenty-one.
The second income survives this route
Families comparing routes usually find this the most consequential difference. Here the spouse's authorization to work flows from the status itself, so a spouse may accept employment with any employer without a separate permission being granted first. In practice the couple should still resolve early what documentation a U.S.
employer will want for employment verification, because a hiring manager who has never seen the situation will ask. Children are in an entirely different position: study is permitted at any level and employment is not, at any age. The twenty-first birthday ends dependent eligibility, so a household with an older teenager should map the dates against the expected length of the posting and ask what independent options exist for that child.