In order to have a successful JIT (Just-in-Time) processing system, all of the following must be present EXCEPT:
Dependable suppliers.
Multi-skilled work force.
A push-approach to inventory
Total quality control system.

A push-approach to inventory

Explanation:

The traditional processing is based on "push-approach" to inventory which is slow and ineffective, on the other hand, Just-in-Time processing eliminates the inventories by using the pull approach.

Just-in-tIme has three needed elements:

1. Dependable suppliers

Who can deliver the required raw materials and other needed items on a short notice and are reliable.

2. Multi-skilled work force

Who can operate a wide range of manufacturing machinery.

3. Total quality control system

To ensure "No defects" in the manufacturing process which required continuous monitoring.

Therefore, In order to have a successful JIT processing system, all of the following must be present EXCEPT: A push-approach to inventory

1. seasonal

2. frictional unenployment

3. the number of the labor force multiplied by 100 and then subtract the number of unemployed.

4. 4%

5. an increase in prices