Word for "someone with no responsibilities assigned to them"?

Concept

What is the word for someone who has no responsibility? I am meaning a situation where someone lacks anything to be responsible for.

Adjusting Google/Oxfords' meaning of "responsibility" to try and make the concept more clear: The state or fact of having no duty to deal with anything or of having no control over anyone.

Specifically, I am looking for an adjective that describes a person. Like responsibility, it should reflect one's duty or state, not one's desire. But unlike responsibility, it should not imply a moral obligation nor a lack thereof.

Example Usage

Example sentences using a phrase:

• "The baby, previously lacking anything to be responsible for, finally set their heart on locomotion: the art of flailing limbs and sliding belly to move across the plush carpet.
• "His body finally able to rest, the industrial man becomes the man that now lacks anything to be responsible for."

With a made up word "aresponsible":

• "The once aresponsible baby finally set their heart on locomotion: the art of flailing limbs and sliding belly to move across the plush carpet."
• "His body finally able to rest, the industrial man becomes the aresponsible man."

Antonyms Tried

While checking Cambridge's Thesaurus for antonyms "be responsible for" gave no results, "be responsible" only gave the word "innocent". Innocent seems to mean a lack of knowledge or a state of being wrongfully accused. Innocent does not convey my idea properly. A lack of responsibilities can be known or not known and has nothing to do with accusations.

Another common suggestion is "irresponsible", from wiktionary.org's antonym list for example, but it comes with the assumption that responsibility is being neglected or there is a lack of ability to handle responsibility. Someone without responsibility could very well be aware and capable of it, but not have any and may never be obligated, expected, or assigned any in the future. This does not mean they are an irresponsible person.

I will try to source to the best of my ability:

(Wikitionary 8/13/2021)

(Original Google/Oxfords' definition of responsibility, "The state or fact of having a duty to deal with something or of having control over someone." 8/13/2021)

carefree

ADJECTIVE
Free from anxiety or responsibility.
‘the carefree days of summer’ Lexico

carefreeness

The trait of being without worry or responsibility vocabulary.com

But for most of us carefree living is taking no responsibilities and an escape from the world itself. ref.

Childhood is idealized as a carefree period—no responsibilities, no worries about calories. ref.

She had been eighteen, no age at all really, but though they had both been delighted at the thought of parenthood, carefreeness had flown out the window. ref.

You could refer to a carefree state/existence, or the state/condition of being carefree if that works better than carefreeness.

For completeness, a very specific term in government is: minister without portfolio.

Most government ministers have responsibility for a government ministry or department or other office (known as their ‘portfolio’).  But a politician can be given a ministerial salary and participation in cabinet meetings and decisions without that specific responsibility, by appointing them minister without portfolio.  This may be because they hold a non-government position (such as party chairman), or have an area of responsibility not aligned with the existing structures, or simply because the head of government values their participation at that level.

I'd go for "footloose". It literally means "unshackled", but - according to Etymonline.com - it has meant "free to act as one pleases" since 1873.

If that feels a bit informal, you might try "unengaged". It can mean "currently without a job", though (on the downside) it could also suggest "detached" in a disparaging sense.

Yes, it's interesting, isn't it? I kept feeling that the answer to your question was obvious, that it was on the tip of my tongue; but nothing really satisfying ever arrived. It definitely feels like we should have a word for it, but even a word like "insouciant", which literally means what you're asking for, has taken on that rather dismissive feeling, as if to describe someone as being "without responsibilities" is a criticism.

Floater

As in, somebody within an organization who does not have a fixed assignment. Rather, their skills are deployed as and where they are needed (e.g. paraprofessional aides who move between classrooms).