on shoulders

on (one's) shoulders

In the position of being one's sole responsibility or obligation. My siblings' care has been on my shoulders ever since our parents died. I didn't want to put the survival of the entire company on your shoulders, but you were the only one I could trust could do it.
See also: on, shoulder
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

*on someone's shoulders

Fig. on someone's own self. (*Typically: be ~; carry something ~; fall ~; have something ~; leave something ~; put something ~.) Why should all the responsibility fall on my shoulders? She carries a tremendous amount of responsibility on her shoulders.
See also: on, shoulder
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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