"It is a tragic and unfortunate incident. It should have never happened. The state government acted promptly last night itself," Sharma told reporters here.
The company's Manesar plant was shut following large scale arson in which Awanish Kumar Dev, General Manager (HR), was burnt beyond recognition while 100 others were injured yesterday.
"I do not see that one incident would shake industry's confidence," he said, adding the state government is capable of handling the situation and protecting the industry and investments.
Police today arrested 91 employees in connection with the violence.
Labour unrest has been erupting in the area frequently. Maruti had witnessed troubles on three occasions in the last one year causing a total production loss of about Rs 2,300 crore.
With Maruti Suzuki India's share price tanking close to 9 per cent today, its investor wealth eroded by Rs 3,183 crore in the stock market.