On-the-job training was required for 76.8% of all civilian workers in 2018, according to the US Bureau of Labor Statistics’ Occupational Requirements Survey released Thursday. The average length of on-the-job training was 34 days.

The BLS report also found prior work experience was required for 47.0% of workers and 33.0% of workers were required to have completed pre-employment training. The preparation time required for a typical worker to learn the techniques, acquire the information and develop the facility needed for average performance in a specific job can range between a short demonstration to more than 10 years. Preparation time includes formal education, pre-employment training, on-the-job training and prior work experience.

Staffing providers have already taken note of the need for training, according to Staffing Industry Analysts’ report, “North America Staffing Company Survey 2018: Training Options Offered to Temporary Workers,” which found more than half of staffing agencies offer some training to temporary workers. Free online training, the most common method provided, is offered by 40% of staffing firms. And commercial staffing firms reported more training options for temporary workers than professional staffing firms, according to SIA’s report.

The BLS combined data across three samples collected over a three-year period to produce the report’s 2018 estimates. The total sample included approximately 25,300 establishments and estimates represent about 140.8 million civilian workers.