A very good question, Mr. Bhaskar, and I agree with Mr. BSSV too. Well, there are two things that come to mind when we think about this kind of case.
Compensation Act and Employer's Responsibility
The first thing is that we can't avoid the Compensation Act that is applicable, and employers follow and take action according to what the rules and policy say. We know that anyone engaged for the purposes of the employer's business (at work/job) means who is at the premises, inside the gate of the company, at the site, and while working, met with an injury/accident, shall be entitled to compensation.
If an employee meets with any accident/injury arising out of and in the course of his employment, it means he is at work. However, if any employee is walking down to reach work, like in your query where the employee was still on the way to work and met with an accident, they are not eligible for compensation. But, as Mr. BSSV said, it also depends on the employer, although I don't think any employer can favor this.
Informing Workmen Compensation Commissioner
Second, regarding whether we inform the Workmen Compensation Commissioner about the railway trespass accident of the worker or not, well, there is no need to do that as this is completely a negligence of personal safety done by the individual and suffered because of it (as you said in your response or thread #3). Also, the Railway authority would never take responsibility and should not do that too.
Group Personal Accident (GPA) Insurance Scheme
On account of the Group Personal Accident (GPA) Insurance Scheme, if it is obtained, it is a welfare measure formulated to insure the employees against the consequences of personal accidents and provide appropriate relief to the affected employee or the nominees through an insurance cover. This scheme provides coverage to employees around the clock, whether they are on the company's duty or not, at any location in India, which is like a normal Personal Accidental Insurance Policy.
Benefits under GPA also vary according to the policy provider, such as HDFC ERGO, which gives much different benefits to employees than SBI, Future Generali, and they are doing the same.
Regards,