Challengeless

There are a variety of forms of adjustment workers may make to “objectively” challengeless work (that is, work which most observers—and especially college professors—report as challengeless).

Source: wiktionary

Well educated, relatively secure in their jobs, and interested in doing their own things, these workers resist accepting the boring, challengeless jobs that their elders saw as inevitable.

Source: wiktionary

Challengeless bureaucratic jobs inhibit the normal development of the human personality, thus leading to poor mental health, apathy, and even the delusion that one prefers highly structured work.

Source: wiktionary

Forgive my voidance of the letter, thou To whom I am in deepest spirit known, Of challengeless uncalculating vow;.

Source: wiktionary