A person who suffers from ergophobia, experiencing irrational fear or intense anxiety related to work.
From 'ergophobia' plus the suffix '-iac' (a person suffering from a condition). This medical term parallels other '-iac' suffixes used in psychology and psychiatry to identify individuals with specific disorders.
An ergophobiac experiences the same panic response to work that someone with arachnophobia feels seeing a spider—their nervous system is literally hijacked by the thought of labor.
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