• Negative Present Perfect Continuous

• 
• Use not for negative statements in the present perfect continuous tense.  Add not between have/has and been.

  
  

  Have/has + not + been + present participle

  -I have not been sleeping well. 
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• Ryan has not been coming to work.	We haven't* been going out recently.
  He has not been eating healthy foods.	It hasn't* been raining.

• *Remember! You can combine have/has and not for negative contractions.

  -He has not been working. > He hasn't been working. 
  

  -They have not been working. > They haven't been working.

  
  

  It is not common to contract the subject and have/has.

  -He’s not been working.

 Source : Alison