Is it possible to copy paste between Mac OS and its virtual machine?
You can find a lot of documentation about copy/paste, drag and drop,... on the website of VMWare, and they stated: 


  To use the copy and paste feature, VMware Tools must be installed on
  the virtual machine.


But since you've already installed those tools, I recommend you reinstall them. Just to be sure.

Also, make sure you don't stumble upon the limits of this feature:  


  
  You cannot copy and paste or drag and drop content that exceeds the internal buffer limit of 4MB.
  Copy and paste or drag and drop of formatted text containing images might not work across different operating systems.
  Copying and pasting files from the host to an Outlook email message or compressed folder in the guest and vice versa might fail. 
  Workaround: Copy files from host to the guest desktop first and then
  paste the files from the guest desktop into the Outlook email message
  or compressed folder.