As of now, you have received only a tip-off on the mala fide activities of your managers. However, to take disciplinary action, you need to have material evidence.
To establish the truth, you may keep him under surveillance. Generate sufficient proof of his knavery. As the peak time gets over, you may order domestic enquiry to establish his misconduct.
14th June 2019 From India, Bangalore
As an organisation what necessary steps we should take against him?
18th June 2019 From India, Mumbai
If you have material evidence to prove that the employee has worked for some another company then order the domestic enquiry and let his misconduct be proved. In the domestic enquiry, the employee is given a chance to defend his position. Based on the outcome of the enquiry your management can take a decision whether to terminate the employee or not.
The employer-employee relationship is an internal matter of the company. If for some reasons if the relationship goes awry then either party cannot start giving publicity in the newspaper. That could tantamount to defamation and it could lead to further problems. Therefore, keep this matter within the four walls of the company. Taking disciplinary action itself is a punishment. By giving publicity in the newspaper what are you going to achieve? Just mental satisfaction and beyond nothing else.
Do not terminate the employee without conducting the domestic enquiry. Do not issue any termination letter without conducting the domestic enquiry. Follow the proper process of the enquiry. At this stage, what is needed is to think from the head and not from the heart.
18th June 2019 From India, Bangalore
Working for two employers simultaneously is unethical and violates service conditions.
Such acts of moonlighting by an employee at the Managerial level needs to be dealt with severely.
Suggest immediate suspension pending enquiry.
Issue him the show cause notice giving full facts about his misbehaviour and ask his written explanation .
This action itself will be sufficient for the person at his level. If he is truly guilty he will admit and offer to leave the job on his own.
It is then for management to decide whether to terminate him or let him go without blot.
19th June 2019 From India, Mumbai