yes, basically 16 year old can do all types of work, but they aren't allowed to drink alcohol so they need a shop assistant who is 18 or over to press the button for them when they sell alcohol.
16 year olds can get married (with parent's permission needed till 18) but they can't drive a car till age 17.
that seems about right to me. many 16-18 year olds are not great at academic study, so forcing them to study an extra 2 years when they can go out and earn money instead seems silly.
i know someone from school who hated study (average intelligence, she is not stupid) and left to get work at 16 and is still in the same job more than 20 years later. this is less usual these days because of the international economic recession.
both my parents left school age 16, one for economic reasons; the other wasn't good at exams and got an apprenticeship right away (and since then got many minor qualifications in various technical subjects).
many governments these days want to force people to study more.
i think this is to hide the fact that there are not enough jobs for everyone.
anyway, i hope and pray our college and school students here do well and prepare in all ways (not just academic) for an interesting job and life of service to God.