As per the notification, it stipulates that salary/wages drawn up to Rs. 21,000/- p.m. only are eligible to receive a bonus. Contract workers are also eligible subject to this limit.
The Act is applicable to:
(a) any factory employing 10 or more persons where any processing is carried out with the aid of power.
(b) Other establishments (established for the purpose of profit) employing 20 or more persons.
The minimum bonus payable is 8.33%, and the maximum is 20%. Bonus is payable annually within 8 months from the close of the accounting year. Bonus is payable to all employees whose salary or wages do not exceed Rs. 21,000 per month (the limit was Rs. 10,000 up to 1-4-2014) provided they have worked for at least 30 days in the accounting year. However, for the calculation of the bonus, the maximum salary of Rs. 7,000 or the minimum wage for the scheduled employment, as fixed by the appropriate Government, whichever is higher (the limit was Rs. 3,500 up to 1-4-2014) is considered.
The Payment of Bonus Act applies to:
(a) every factory; and
(b) every other establishment in which twenty or more persons are employed on any day during an accounting year [section 1(3)].
Summary of employees eligible/not eligible:
Following is the summary of employees eligible/not eligible for a bonus under the Payment of Bonus Act.
Following employees have been held as eligible:
(a) Temporary workmen
(b) Retrenched employee
(c) Part-time employee
(d) Probationer
(e) Piece-rated workman
(f) Employee in a seasonal factory is entitled, though on a proportionate basis
(g) Retrenched employee
(h) Employee who has caused financial loss to the employer is eligible, but the loss can be recovered from the bonus only of the current year section 13
(i) Employees of Public Sector Units which sell goods or render services in competition with others.
Following are not eligible:
(a) Apprentice section 2(13) definition of an employee
(b) In the case of employees employed through contractors, the Principal Employer is not liable, as the bonus is not wages, though the contractor may be liable.
In case the Contractor fails to pay a bonus to their workmen, the Principal Employer has to assume liability to pay to the contract employees and recover from the Contractor.
For your second query - The State govt. Labour Inspectors/Labour Officer/ALC under whose jurisdiction the place of work is situated has to oversee the implementation of labor laws, including the Bonus Act. In the case of certain Govt. of India Utg. CLC may have jurisdiction which has to be checked with them w.r.t. notifications issued by the respective State govts.
For a proper understanding of applicability, exemptions & jurisdiction, you have to read (Sec.27 & 32) and take note of relevant provisions of the Acts & Rules (copies attached).