Analyse two likely benefits to RR of introducing lean production. [8 marks]
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Cambridge 9609, Paper 3 & 4. 330 questions, 2020 to 2026.
Case studies and questions retyped from the original Cambridge material; Paper 3 mark schemes are cropped from the official mark scheme PDFs, Paper 4 mark schemes are retyped as text. A few 2020–2022 Paper 3 case studies were recovered by OCR from a damaged source file — those are marked where it applies.
Questions on operations strategy: lean production, Kaizen and JIT, enterprise resource planning (ERP), process innovation and R&D, IT in operations, and critical path analysis and network diagrams.
29 past paper questions on this topic since 2020, across 17 exam sessions.
| Year | Paper 3 | Paper 4 | Total | Chart |
|---|---|---|---|---|
| 2026 | 2 | 0 | 2 | |
| 2025 | 4 | 2 | 6 | |
| 2024 | 2 | 2 | 4 | |
| 2023 | 4 | 2 | 6 | |
| 2022 | 4 | 0 | 4 | |
| 2021 | 5 | 0 | 5 | |
| 2020 | 2 | 0 | 2 |
The whole topic on one page, with answers and mark schemes. Printing this page prints just this list.
RR is a manufacturer and retailer of luxury beauty products. Reeta Roy started RR in 2016 after managing several small enterprises with limited success.
Using her creativity, Reeta produced the first batch of soap in her kitchen. Reeta used fresh ingredients from her home region of country X. Customer feedback was positive and Reeta decided to form a private limited company. RR rented a local factory to start production. The location of the factory was important as Reeta’s business plan was to work with local farmers who could supply fresh ingredients. RR decided not to use machines and instead recruited skilled workers to hand-make its products.
Reeta believes the culture of RR is essential in creating a luxury product. Reeta expects employees to share her pride in RR’s products whether they work in manufacturing or have face-to-face contact with the final consumer.
RR’s first retail store opened in 2017 selling only RR products. By 2026, RR had opened 22 retail stores in country X, with more planned.
Though employees admire Reeta’s determination, energy and charisma, RR has a high labour turnover of graduate level managers due to limited promotion opportunities and training. Reeta believes that leaders are born with the traits and abilities to lead.
The success of RR’s brand is built on using local ingredients. Sourcing quality ingredients to meet demand is a constant problem. RR occasionally has to accept a variation in the standard of ingredients. Some of RR’s products made using these ingredients have to be rejected after quality control. The operations manager has suggested that RR should introduce lean production.
Since 2016, there has been rapid economic growth in country X, see Table 1.1.
RR plans to expand internationally. Reeta wants RR to expand by opening retail units in other countries. However, the marketing team believes that RR should start selling its products using information technology (IT), for example, by using RR’s website and social media. Reeta believes that selling online will have a negative impact on RR’s luxury brand. Reeta thinks that the consumer’s positive interaction with the retail staff is important.
Table 1.2 shows some information about the sales of luxury beauty products in country X.
A survey of RR’s consumers found that 60% said visiting an RR store was a key factor in their purchase decisions and that 45% would consider buying RR products online.
The marketing team has produced an investment appraisal for its IT proposal, see Table 1.3.
FSA is a multinational company and the market leader in beauty products. FSA is aiming to add to its portfolio of luxury brands. RR’s growing reputation has come to the attention of FSA’s Chief Executive, Gabriel Laurent. Gabriel met with Reeta to discuss purchasing 20% of RR’s share capital. Gabriel was impressed by Reeta’s vision for RR and her leadership values. Reeta has placed a high financial value on RR’s shares which is far greater than shown by RR’s latest published accounts. FSA’s Chief Financial Officer (CFO) is concerned by RR’s lack of detailed accounting data including financial ratios. However, Gabriel is convinced that buying 20% of RR’s shares at the value proposed by Reeta is a unique investment opportunity for FSA.



Analyse two likely benefits to RR of introducing lean production. [8 marks]



In 2021, Pavni was made redundant from her job as a production supervisor for a large pottery business. She then decided to open PP as a private limited company in country W.
PP produces and sells handmade gift items made of clay and processed in a kiln. A kiln is a high-temperature oven which turns clay into pottery. PP started with a small range of products including cups, bowls and plates but has since increased its product range to include tea light holders, fridge magnets and small plant pots. The new range of tea light holders has been PP’s most successful product to date.
Pavni has carried out some research into the gift market in country W and has identified forecasts for continued growth. Forecasts indicate that the gift market could grow to $540 million by 2029. The pottery gift segment of this market is 3% and this segment is very competitive.
Pavni sells 75% of her products through three retail outlets business to business (B2B). These retailers place orders with PP quarterly and PP has a 2-month lead time from receiving the order to goods being ready for delivery.
PP has a website for consumers to order direct. Products are delivered to consumers within one week. PP has started to gain brand recognition from repeat consumers. Pavni would like the business to consumer sales (B2C) to grow.
Pavni has employed a university graduate, Fiza, on a full-time contract. Fiza has a marketing degree and is going to manage PP’s social media accounts. The marketing role will involve two tasks:
Pavni is anticipating B2C sales will increase to more than 50% of PP’s output once its social media marketing is established. She is uncertain of the impact this will have on PP’s financial efficiency.
Table 1.1 shows PP’s historical financial efficiency data. Table 1.2 shows data relating to PP’s financial efficiency for 2025.
PP employs two potters. Both are experienced in pottery design and manufacture. They are encouraged to research and develop their own ideas. Pavni allows both employees paid time to research and develop their own ideas. She then evaluates their designs and decides whether to produce the suggested new products.
Pavni encourages intrapreneurship by having a flat organisational structure and using delegation. Pavni believes this business approach will help PP’s growth.
Consumers are increasingly ordering from social media platforms. For PP to respond to market development, the business is developing its social media marketing.
Country W only has one supplier of clay. PP uses this supplier. The supplier offers 30 days payment terms with a 5% discount if PP pays within 20 days. The supplier imports clay from China and so it has limited control over the quality or cost.
PP will need to increase production capacity to meet the forecast demand from online orders. In order to grow the business, Pavni has decided to invest in a new, larger kiln. The new kiln will allow more items to be manufactured at the same time and will decrease the number of faulty products.
Pavni is considering two options for the new kiln. Table 1.3 shows the investment appraisal information.



Analyse one advantage and one disadvantage to PP of the changing role of Information Technology (IT) in its. [8 marks]



Lithium is an essential raw material used in batteries for electric vehicles, smart phones and other products. LBM has developed techniques to detect lithium using mapping technology. LBM sells its survey results to other mining companies. LBM’s annual revenue is less than $1 million and it is losing $2–3 million per year. LBM is planning to start its own lithium mining operations in country G, where it is based.
LBM has researched and developed two effective ways of mining lithium. The first is hot water mining and the second is hard rock mining. LBM became a public limited company one year ago. LBM has substantial finance obtained from grants, shareholders and crowdfunding available for investment. LBM’s revenue is forecast to rise rapidly once mining begins.
Annual global demand for lithium is rising considerably and forecasts show world supply will not meet demand after 2030. As LBM establishes its own mining operations it will need to forecast sales. There are likely to be variations in demand for electric vehicles and smart phones over time. It is difficult to vary the output from lithium mines at very short notice. Holding inventory of this raw material involves high costs. Alternatives to lithium are being developed.
LBM is the only business in country G planning to mine lithium. The government is very concerned that:
The government is therefore considering nationalising LBM.
Despite local opposition, LBM plans to open its first mine in four months’ time. Hot water from three kilometres underground will be pumped up to a factory where lithium and possibly other rare raw materials will be extracted from the water. After the extraction process the hot water can then be used for heating local housing. The Operations Director, Astor, estimates the project has a 15‑year life span. However, future cash flows beyond six years become increasingly uncertain.
Table 1.1 shows the data used by LBM in the decision to go ahead with the hot water mine. The data excludes costs and revenues from extracting other raw materials that may be found in the water. LBM has enough finance for the hot water mine if there are no adverse variances to the budget.
LBM uses a ‘soft’ HRM approach for its current 35 graduate employees. They are given delegated powers and decide their own work patterns individually or in self‑selected teams. Many of these graduates are involved in using the mapping technology to find new mines and developing mining techniques.
LBM has started recruiting 150 people to be employed at the hot water mine site. Ten new employees will be technology specialists who will closely supervise the work. The other new employees will be trained to operate machinery. The directors plan to use a ‘hard’ HRM approach for these machine operators.
LBM is also planning to open a hard rock lithium mine in two years’ time. Lithium is found inside hard rock layers underground. LBM plans to drill into these, bringing rock to the surface to be treated to extract lithium. Astor has identified a suitable area 500 metres underground. Table 1.2 and Figure 1.1 show the results of some of his operations planning. The data was obtained from mining industry sources, suppliers of drilling equipment and the LBM Research and Development (R & D) team.
Table 1.2: Hard rock lithium mining project activities used in Critical Path Analysis (CPA)



(a)(i) Using Figure 1.1: calculate the total float for activity C Total float is the maximum time an activity can be delayed without delaying the whole project time or LFT – duration – EST OR LST – EST (). [3 marks]
(a)(ii) identify the minimum project duration. Sum durations of critical path: 40 + 60 + 10 + 5. [1 marks]
(b) Evaluate the importance of Critical Path Analysis (CPA) to the success of the hard rock mine. [12 marks]





WS is a public limited company. WS manufactures leather shoes for adults. It sells to major shoe retailers and to small independent shoe shops. WS products are targeted at three constantly changing markets: fashion, leisure and work. Its sales employees are reporting that small independent shoe shops have experienced an increasing demand for non-leather and recyclable shoes. There is a growing consumer awareness that resources used in production need to be sustainable. Jon, the Marketing Director, is very keen for WS to carry out an environmental audit.
Enterprise resource planning (ERP) WS uses different IT systems for managing production, marketing and human resources. Keri, the Operations Director, thinks that the processes needed to produce and market shoes could be more integrated. Greater integration could help to improve the efficiency of WS. Keri has begun to research ERP as a means of achieving this integration. She knows that ERP is very expensive and takes time to implement but she is convinced that it could offer WS substantial efficiency benefits.
WS uses batch production to produce different styles of shoes. The production employees at WS are:
Milo, the Human Resources Director, and Keri are concerned that the performance of production employees is declining. Table 1.1 gives data about production and production employees.
WS sells its shoes into three markets: fashion, leisure and work. Each market has its own characteristics. WS shoes are medium to high price in each market. Research shows that consumers consider WS shoes are good quality for the prices charged.
Jon is preparing a marketing plan with the objective of increasing annual sales by 5% without entering any new markets. Table 1.2 shows time series analysis sales data Jon is using. Jon considers that time series analysis will help him make decisions to achieve WS’s marketing objective. Table 1.3 gives additional information about the markets WS sells to.
In recent years, the directors of WS have made long-term investment a priority rather than short-term increases in dividends.
The main shareholders in WS take an active interest in the business. At the next company Annual General Meeting (AGM) these shareholders intend to ask the directors to explain their method to increase investor returns. These shareholders will be looking for an effective method to achieve an increase in their return. Table 1.4 shows changes in key investment indicators and ratios.




Analyse two ways that enterprise resource planning (ERP) could improve the efficiency of WS. [8 marks]


PAIR was set up in 2012 by Kaarina Laine, a graduate in Applied Artificial Intelligence. PAIR is a private limited company in country F. Kaarina, the Managing Director, owns 70% of the shares. Four other directors own the remaining shares.
PAIR’s mission statement is ‘to transform business use of robots’. PAIR designs and manufactures robots which use artificial intelligence (AI) to support business operations. PAIR’s most successful robot, the KB1, is an autonomous cleaning robot. In 2024 the KB1 had the leading market share in country F. It is also a successful export for PAIR. The global market for autonomous cleaning robots is competitive with many brands available.
The first version of the KB1 was launched in 2013. PAIR’s sales strategy focused on leasing to businesses to provide a cost-effective solution to cleaning the workplace. Initially sales growth was slow, led by the sales team contacting prospective customers to arrange product demonstrations and trials.
However, global economic growth after the pandemic led to labour shortages which affected the recruitment of cleaning employees. Consequently, many schools, offices and hotels approached PAIR to lease the latest version of the KB1. Revenue grew rapidly from 2021 but PAIR was unable to fully meet demand due to production constraints.
PAIR invests 7% of revenue in Research & Development (R&D) compared to the industry average of 5%. In 2023, the eighth version of the KB1 was launched providing a more innovative, powerful and quieter cleaner. This version has a longer battery life and can clean different floor types. It uses video technology to learn as it cleans.
In 2024, PAIR began development of a new AI delivery robot, Delbot, which will target the hotel market. It will deliver food, towels and other items to hotel rooms. Kaarina confirmed, in a press release, that the Delbot will be available to customers from early 2026. She commented that the whole process from concept to product launch will only take 18 months.
PAIR has a flat organisational structure and is divided into functional departments. The R&D department uses a matrix structure creating one-off teams for specific projects. In 2024 PAIR employed a total of 120 employees.
Quality defects At the end of 2023 PAIR’s Operations Director reported increasing quality problems:
In June 2024 PAIR began the process of replacing quality control with quality assurance. This included:
Table 1.1 provides production and employee data for the KB1 factory. In 2024 PAIR had a labour productivity target of 2200 KB1s per employee.
Kaarina is concerned whether the decision to introduce quality assurance has been beneficial for PAIR.
Increase dividends?
Kaarina plans to expand the product portfolio and enter new international markets. PAIR’s growth has been financed from retained profit and long-term borrowing. Kaarina is now considering whether to change PAIR to a public limited company. Table 1.2 shows selected financial data and ratios for PAIR.
The other four shareholders are dissatisfied with PAIR’s dividend payments and are pressuring Kaarina to increase dividends for 2025.
In February 2025 a battery in one of the latest KB1 robots overheated causing a fire at the school where it was operating. The Operations Director investigated and found that there was a fault in the battery supplied to PAIR. Following the investigation PAIR issued a press release in April identifying the battery supplier as being responsible for the fire. The Marketing Director is concerned about PAIR’s lack of contingency planning. She has finally persuaded Kaarina to call an emergency board meeting to consider the benefits of contingency planning.


Evaluate the importance of Research and Development (R&D) to PAIR’s future success. [12 marks]





IPA is a private limited company in country N, a low-income country in Africa. Adesola Kalu set up IPA in 2019. It has a mission to provide technology access to millions of people through recommerce – the selling of previously owned or used products. IPA buys used smartphones, refurbishes them in its factory and then resells them. This provides consumers and businesses cheaper access to technologically advanced smartphones.
The market for refurbished smartphones in country N is growing rapidly. Most refurbished smartphones are sold during major festival periods. It is a competitive market in which no business has more than a 1% market share. In 2024 12 million refurbished smartphones were sold in country N and this is expected to rise to 14.2 million in 2025. IPA sold 104 000 refurbished smartphones in 2024, an increase of 24 000 from 2023. The average consumer of new smartphones upgrades to the latest model every 15 months. This short upgrade cycle has contributed to the growth of the refurbished market.
The refurbished smartphone market is characterised by inconsistent pricing, stolen devices and untrusted offline retailers. IPA sells refurbished smartphones online through its website and offline through local retailers.
IPA aims to provide convenience, cost-effectiveness and quality assurance to its customers. IPA targets both start-up businesses and households. Promotion has focused on advertising on digital platforms. Prices are competitive. Generous credit terms are given when selling to business start-ups.
Adesola has set an objective to increase sales volume by 60% by the end of 2026. Research by the Marketing Director found that:
The Marketing Director has proposed changes to the current marketing mix including:
IPA has 55 employees of whom 40 are production employees who check and refurbish smartphones. The remaining employees include production supervisors, administrators, sales staff and technicians. Adesola is the Managing Director and there are also directors of finance, marketing, human resources and operations. Production employees are skilled and employed on full-time contracts. IPA invests in training of production employees and pay is competitive. However, at the last board meeting the Finance Director proposed that contracts for most production employees should be changed to zero hours contracts. The Human Resources (HR) Director is now considering the implications of this.
Each smartphone is refurbished and quality-tested, with a 25-point quality check, by IPA’s skilled employees. IPA sells the refurbished smartphones with a 6-month guarantee.
As sales increase, IPA has to recruit and train new production employees. With low unemployment in country N, this is not easy. IPA’s factory is close to full capacity. Consequently, Adesola plans to upgrade machinery and extend the factory to meet expected future demand. Using network analysis, the Operations Director estimates the factory expansion and machinery upgrade will take a minimum of 24 weeks. Activities include:
A partial network diagram is shown in Fig. 1.1 (all activities linked to nodes 5 & 6 are shown).
IPA is profitable but margins are low on each refurbished smartphone. IPA pays sellers of smartphones immediately when the smartphone is received at its factory. The Finance Director is worried about IPA’s liquidity and gearing, particularly as Adesola has committed IPA to rapid expansion plans. Selected financial data and ratios are shown in Table 1.1.
In 2024, economic growth in country N slowed and unemployment began to rise. In response 70 the government is implementing a policy to upgrade infrastructure in country N. This includes providing tax incentives for internet service providers to improve mobile phone connectivity in rural areas.
Further policy measures include a cut in the standard rate of income tax by two percentage points from April 2025. The central bank has also cut interest rates. 75


(a) Complete nodes 5 and 6 on the network diagram below (reproduced from the Insert). [2 marks]
(b) Calculate the total float for Activity F. Total float = LFT (of F) – Duration (of F) – EST (of F) OR Total Float = LST – EST ( if no rewardable calculation). [2 marks]
(c) Evaluate the benefit to IPA of Critical Path Analysis (CPA) as a management tool in planning operations. [12 marks]




Kelp (or seaweed) farming is the practice of cultivating and harvesting seaweed. Farmers gather the kelp from natural beds in the sea. This farming has a low environmental impact.
KK has a licence to harvest and exploit an area of the seabed in country W. The harvested kelp is dried and packaged at KK’s premises before being sold to food manufacturers. KK is a labour intensive social enterprise with a mission to ‘benefit the planet by the most efficient use of natural resources’.
In 2020 KK decided to build a kelp refinery (see Appendix 1). The cost was estimated to be $5 million, and KK would need to borrow most of this. The refinery would use kelp as a raw material to create a pulp that can be used to produce biodegradable plastics.
In 2025 a new government was elected in country W with policies aimed at improving the economy (see Appendix 4). The directors of KK are considering the likely impact of the government’s policies on KK’s business strategies.
Appendix 3: Interview with Managing Director about the new kelp refinery in 2022
Kelp farming is a new and exciting industry in country W. KK is one of its champions and is developing a new kelp refinery. The innovative business has sustainability at its core and is trying to be as efficient as possible. Elis Nik, the Managing Director of KK, said ‘we believe that the key to success is to keep getting better. Our new refinery will be state-of-the-art, but we will not be complacent. Our employees will always have new ideas to increase efficiency, which we collect through an employee suggestion scheme.’
The refinery aims to have zero waste, with recycling of key components and renewable energy powering the entire facility.


Evaluate the effectiveness of KK’s operations strategy between 2020 and 2024. [20 marks]
Knowledge (max 1 mark) can be awarded for knowledge about operations strategy, can be awarded for understanding of the operations strategy up to two marks including:
Operations strategy involves lean production. Some basic knowledge about Operations strategy involves lean production. This could include Kaizen. 1 K for identification and 1 DEV for a point of explanation Operations strategy involves lean production. This could include Kaizen. 1 K for identification and 2 DEVs for Which is involving everyone in making continuous improvement in their jobs two points of explanation
Note: Candidates can gain full marks for AO1 from one term that is explained ( + + ) or from two terms partially explained ( + and + ) No other AO2, AO3 OR AO4 marks can be awarded without AO1.
Application (max 2 marks) can be awarded for applying knowledge, analysis or evaluation of operations strategy to KK, including:
Analysis is likely to be based on how effective elements of KK’s operations strategy has been ( and and ), including:
Candidates’ analysis must be business facing. They may identify an element of operations strategy and provide developed analysis to get to L2, this then needs to be counterbalanced to get to L3. If a candidate does this twice, they will gain 8 marks.
Evaluation ( and and ).Evaluation will largely depend on the points raised in the analysis.
Candidates MUST answer the question – how effective was KK’s operations strategy between 2020 and 2024. The development and support of this judgement will help them to move through L2 and L3.
To award L3 the answer must be in context and draw upon the previous analysis.
No credit
L1 including: L2 including: (developed L3 (developed supporting (limited supporting supporting evidence) evidence with context) evidence) JIT has helped JIT has helped KK’s JIT has helped KK’s operation’s JIT has helped KK’s operation’s KK’s operations operation’s strategy as strategy as costs are lower strategy as costs are lower because strategy. costs are lower. because of the need for less of the need for less processing. This processing. will help with the overall aim of having zero waste.
The operations KK’s operations have not KK’s operations have not improved KK’s operations have not improved have not improved as they are not as they are not working at full as they are not working at full improved working at full capacity. capacity. And customers are now capacity. Only 40% of the capacity waiting longer for their orders is being used. And customers are now waiting longer for their orders, increasing from a week to a month Accept all valid responses.
Emilio started CH as a hobby in 2012. He started by having two beehives on the roof of his apartment building in the city. Emilio collected the honey his bees made in the beehives from flowers in the city’s gardens and parks. He then sold the honey in jars to local stores and at markets.
In 2014 Emilio decided that he wanted to turn CH into a full‑time honey producing business. He started to increase the scale of operations with a key aim to grow the business.
2015–2018 CH relocates the beehives to a rural location and increases the number of beehives. CH gains an organic quality standard for its honey. CH now also sells its honey to national retailers and supermarket chains.
2019CH buys and moves to a bigger factory which is five times the size of the old one. Emilio implements an Enterprise Resource Planning (ERP) software system (see Appendix 1).2020–2022 CH increases its range of products to include maple syrup, Manuka honey and New Zealand honey. These are all imported and distributed through CH’s supply chain. Inventory management of these products through ERP has not always been reliable (see Appendix 2).
2023CH leases a warehouse for its inventory. Sales increase by 50%. Factory and warehouse employees are increasingly demotivated by scheduling carried out through ERP. The employees have contacted their trade union (see Appendix 3).2024CH works with a university to develop natural energy gels for athletes to eat during exercise, using its honey as an alternative to processed energy gels (see Appendix 4).Emilio wants to grow the business further. He wants to expand operations into other honey products. However, the Marketing Director wants to focus only on increasing sales of existing products.
Before making a final decision, CH needs to use different approaches to analyse both the business and the market to develop a future business strategy.
7000
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 week
Since CH leased the warehouse our members have been directed to work in areas where they do not feel they are fully trained. This is because ERP software is scheduling employees randomly across departments and product lines. This is affecting employee motivation. The trade union requests an urgent meeting with management to resolve these problems.
Appendix 4: Extract from operations report on the costing and pricing of the natural energy gels (2024)

Evaluate how significant Enterprise Resource Planning (ERP) was to CH’s operations strategy between 2019 and 2024. [20 marks]
Knowledge (max 1 mark) can be awarded for knowledge about Enterprise Resource Planning (ERP), including:
Note: Candidates can gain full marks for AO1 from one term that is explained ( + + ) or from two terms partially explained ( + and + ).
Application (max 2 marks) can be awarded for applying knowledge, analysis or evaluation of ERP to CH, including:
Analysis is likely to be based on how ERP has helped operations strategy in CH ( and and ), including:
Candidates need to identify an element of ERP and provide developed analysis to get to L2, this then needs to be counterbalanced to get to L3. If a candidate does this twice, they will gain 8 marks.
Evaluation ( and and ) Evaluation will largely depend on the points raised in the analysis.
Candidates MUST answer the question – how significant ERP was to CT’s operations strategy between 2019 and 2024.
The development and support of this judgement will help them to move through L2 and L3.
To award L3 the answer must be in context and draw upon the previous analysis.
CH need to find more reliable suppliers – this could prove costly.
This keeps down average costs and ensures the new product is profitable.
Overall success will depend on the analysis and evaluation provided by the candidate.
• It has been successful in some areas (capacity and costing/pricing) while other areas less so (stock management and HR). Impact on operations may have been more favourable as the stock management is now sorted after 4 months/16 weeks.
No credit
L1 including: L2 including: (developed L3 including: (developed (limited supporting evidence) supporting evidence with supporting context) evidence) The ERP has The ERP has The ERP has worked for CH, as The ERP has worked for CH, as the worked for CH. worked for CH, as the capacity in the factory has capacity in the factory has improved the capacity in the improved. This will help with from 80% to 90%. This will help with factory has productivity and efficiency in the productivity and efficiency in the improved. factory. factory.
The ERP has not The ERP has not The ERP has not helped CH. The The ERP has not helped CH. The helped CH. helped CH. The human resource management has human resource management has human resource been poor. This is an important been poor. The scheduling has led management has part of ERP as the workers keep to demotivated employees affecting been poor. the systems running. the costs and productivity of CH.
This is an important part of ERP as the workers keep the systems running.
Accept all valid responses.
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