The document describes different types of premium bonus plans that provide incentives for workers to increase productivity. Under a premium bonus plan, a standard time is set for completing a job and workers are paid for the actual time taken plus a bonus based on the time saved compared to the standard. The Halsey premium plan pays wages for actual time plus a 50% bonus on time saved. The Rowan plan calculates bonus as the proportion of time saved to standard time, providing increasing incentives for efficiency gains. The plans aim to increase production while sharing the benefit of time savings between workers and employers.