Here's a fun cartoon poster of a caretaker - useful for a "People Who Help Us" theme, or for around school, perhaps. Scroll down for matching colouring page and "learn to draw" printable.
Here's another printable poster of a teacher, ideal for displaying in a classroom. You can print a version with a label too.
This ballet teacher poster would be an excellent addition to a display of artistic professions. Or stick up in the role play corner as inspiration for imaginative games.