Dear Meenakshi Gupta, It would have been better if you had mentioned the location of the restaurant. The question in the second part of your post is not clear, as suggested by Dinesh—whether you want an alternative to the system of overtime work or simply an alternative mode of payment for overtime work. Whatever clarification is sought, I am sure you are fully aware of the concept of overtime work by employees and the need for, as well as the scale of, compensation in this regard.
Understanding Overtime Work
The restriction of working hours to 8 hours a day and 48 hours a week is the first convention of the ILO, if I remember correctly. The time an employee works at the instance of the employer beyond normal working hours is called "overtime" in employment terms. Apart from the Minimum Wages Act, 1948, a monetary labor legislation, the Contract Labour (Regulation & Abolition) Act, 1970, and the Building and Other Construction Workers (Regulation of Employment Service) Act, 1996, labor legislations deal with special types of indirect/ad hoc labor.
Establishment-Oriented Labor Legislations
Establishment-oriented labor legislations such as the Factories Act, 1948, Mines Act, 1952, Working Journalists (Conditions of Service) Miscellaneous Provisions Act, 1955, the States' Catering Establishments Acts, etc., invariably provide for overtime work and the mode of compensation for it. Most of these enactments, except the Working Journalists Act, prescribe only monetary compensation at twice the rate of normal wages. Rule 10 of the Working Journalists Act prescribes compensatory rest hours equal to the overtime hours worked beyond 6 hours in a day shift and beyond 5 1/2 hours in a night shift.
Impact of Reducing Overtime Work
Generally, a reduction in overtime work will result in more employment and more leisure for the existing labor at the end of the normal workday. However, exigencies of work can necessitate the adoption of overtime work, justifying compensation at twice the normal wages. Any alternative mode of compensation, like the one hesitantly suggested by Dinesh, should not be effectively less than the statutorily prescribed compensation.
Considering practical factors peculiar to your restaurant, such as the types of menu, serving times, and restrictions on service time by Public Authorities like the Police, you may decide on the possibility of shift working to minimize the incidence of overtime work.
Regards