*Several **noncooperating** coworkers caused the project to be delivered late.*


>Etymology	
> non- +‎ cooperating.   
>Adjective	 noncooperating ‎(not comparable)
>[Wictionary][1]

Or rephrasing :
  *Several coworkers, **who did not cooperate well**, caused the project to be delivered late.*

  [1]: https://en.m.wiktionary.org/wiki/noncooperating