From India, Delhi
if the staff has some basic fixed salary based on muster roll of employee apart from incentive / commission, i.e in ground salary, then they are to be treated as "employee earning wages" and they get eligible for wages and other benefits which are applicable to regular employees,
commission based staff is a wide scope of activities, and it is not clear the role / job profile of employee to the employer
employer can be commission agent, or insurance advisory. that is irrelevant to the benefits