Q.A worker is given a Time Allowed of 8 hours for a job at a Time Rate of ₹18 per hour, but actually takes 9 hours to complete it. Calculate the worker's Total Earnings under

Since the worker took longer than the Time Allowed, there is no time saved at all under either scheme, so both schemes simply guarantee the plain Time Rate wage for the hours actually worked, with no bonus and no penalty.

Time Saved = Time Allowed − Time Taken = 8 − 9 = −1 hour, which is NEGATIVE — but a Premium Bonus Scheme never treats a negative time-saved figure as a penalty. By convention, whenever Time Taken equals or exceeds Time Allowed, Time Saved is simply taken as Nil, and no bonus is paid under either scheme; the worker is not penalised for taking longer than standard, only denied the extra bonus.

1. Halsey Scheme: Bonus = 50% × Nil × ₹18 = ₹0. Total Earnings = Time Taken × Time Rate = 9 × ₹18 = ₹162.
2. Rowan Scheme: Bonus = (Nil ÷ 8) × 9 × ₹18 = ₹0. Total Earnings = 9 × ₹18 = ₹162. …

A frequent error is either (i) computing a negative bonus and subtracting it from the worker's wages, wrongly penalising the worker, or (ii) paying the worker only for the Time Allowed (8 hours = ₹144) instead of the Time actually Taken (9 hours …