laid-off vs surplus to requirements

laid-off

adj
  • Made unemployed or redundant. 

  • Bet with another bookmaker to reduce risk. 

surplus to requirements

adj
  • Laid off; having one's employment terminated. 

  • No longer needed, redundant. 

How often have the words laid-off and surplus to requirements occurred in a corpus of books? (source: Google Ngram Viewer )