Should you be symptom free before returning to work?

I am greatly improved but still experienced the following symptoms this week:
Fatigue
Lightheadedness
Problems concentrating
Tinitus
Head Pressure
Insomnia
Sinus Pain
Neck Pain
Numbness in head
Milder noise and light sensitivity

What do people think, I want to get back part time, but have only started to get better this week after an injury in early November?