Under which plan efficiency is shared by employee and employer equally?

The correct answer is D. Rowan plan.

The Rowan plan is a type of incentive plan in which employees are paid a base rate plus a bonus based on their efficiency. The bonus is calculated as a percentage of the time saved, with the percentage decreasing as efficiency increases. This plan is designed to motivate employees to work more efficiently, as they will receive a greater bonus for saving more time.

The other options are incorrect for the following reasons:

• Time rate: This is a simple pay plan in which employees are paid a fixed rate for each hour worked. There is no incentive for employees to work more efficiently under this plan.
• Gantts task and bonus plan: This is a type of incentive plan in which employees are paid a base rate plus a bonus for completing tasks ahead of schedule. The bonus is typically a fixed amount, regardless of how much time is saved. This plan does not provide as much incentive for employees to work more efficiently as the Rowan plan does.
• Halsey plan: This is a type of incentive plan in which employees are paid a base rate plus a bonus for increasing their efficiency. The bonus is calculated as a percentage of the time saved, with the percentage remaining constant regardless of how much time is saved. This plan provides less incentive for employees to work more efficiently than the Rowan plan does, as the bonus is not as large for employees who save a lot of time.