Have you already had an open and honest discussion with him outlining the above? Presumably you have evidence of his decreased productivity so that it's not a s

Have you already had an open and honest discussion with him outlining the above? Presumably you have evidence of his decreased productivity so that it's not a subjective point of view. What is his response when you tell him that he's been absent and not productive when present? Maybe he doesn't want time off, but he needs to come up with a plan with you guys that has him returning to regular productivity.