Lifeguard

Lifeguard is a profession in The Sims 3: Island Paradise and a part-time job in The Sims 4: Island Living.

The Sims 3: Island Paradise
Sims can join the profession by going to city hall or clicking on the life guard chair at the beach, in addition to newspaper and computer.

This is a playable career, so you have to keep watching over people in the sea of the beach you are working on. For this career, you have to improve your athletic and charisma skills, other than doing jobs at the beaches to improve your job performance. If you are a rank 10 lifeguard and save 35 sims, you'll be rewarded a title of an uncharted island.

This job will always take place on Monday, Wednesday, Friday, and Sunday regardless of what level you are on. Jobs might not occur on these days if it's one of the festival days (see The Sims 3: Seasons). This job will always go from 10:00 to 18:00 (military time) regardless of what level you are on.

The Sims 4: Island Living
Lifeguard returns in The Sims 4 in the form of a part-time job.