Under the microscope

From Fresh Dictionary

English

Idiom

under the microscope

1. ((idiomatic{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) Under close scrutiny or examination.

   After his productivity flagged, his boss put him under the microscope to try to isolate and correct the problem.