Step 1: Understanding overtime under the Factories Act.
Section 59 of the Factories Act, 1948 provides that when a worker works for more than nine hours in a day or more than forty-eight hours in a week, he is entitled to overtime wages.
Step 2: Rate of overtime wages.
The Act clearly states that overtime wages shall be paid at twice the ordinary rate of wages. The “ordinary rate” includes basic wages and certain allowances but specifically excludes bonuses and overtime wages.
Step 3: Examination of incorrect options.
Option (A) is incorrect because piece-rated workers are also entitled to overtime. Option (B) is incorrect as the threshold is nine hours, not ten hours. Option (D) is incorrect because State Governments do have the power to prescribe registers and determine cash equivalents of concessional supplies.
Step 4: Conclusion.
Therefore, option (C) correctly states the law relating to overtime and its calculation under the Factories Act, 1948.