### Clue: Worker is about to meet Her Maj, becoming more nervy (7)
### Answer: ANTSIER 
 ### Explanation: Definition: more nervy
  ANT(a *worker* in an ant colony) + reversal(*about*) of IS + ER(*Her Maj*esty, $$E$$lizabeth $$R$$egina)
Defn:  A comparative for "antsy", from "ants in your pants", which would definitely make you agitated and nervous or *nervy*.  Nice surface.