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In the construction industry, while many may have heard the term "construction management ledger," there are likely many who do not fully understand its necessity, the specific projects for which it is required, or its exact purpose. The construction management ledger is one of the important documents stipulated by the Construction Business Act, and neglecting its creation or management can lead to guidance or penalties. On the other hand, as the number of sites and subcontractors increases, management can become complicated, leading to the perception that it is "quite a challenging document." This article will clearly explain the basic meaning of the construction management ledger, the obligation to create it, its contents, format, penalties, and efficient management methods from the perspective of construction industry practice. *For detailed content of the article, please refer to the PDF document. For more information, feel free to contact us.*

In the construction industry, there are numerous structural challenges that pressure cash flow, such as "taking several months from invoicing to payment," "advance payments for material and labor costs," and "delays in receivables collection." Moreover, the difficulty of cost management for each project and the strict lending assessments by financial institutions contribute to the ongoing risk of cash shortages and bankruptcies faced by companies. This article organizes the unique cash flow structure and key points of cash flow management in the construction industry, and broadly introduces practical improvement measures and funding methods, including the creation of cash flow statements, selection of profitable projects, contract negotiations for advance and interim payments, and the utilization of various lending systems and factoring. Additionally, it explains how to use the cloud service "Sakumiru," which supports the visualization of funds and stable management for small and medium-sized construction companies with fewer than 50 employees. *For detailed content of the article, please refer to the PDF document. For more information, feel free to contact us.

The attendance sheet is a fundamental document for managing attendance in the construction industry. In the construction sector, where site conditions and working hours can easily become complex, accurate record-keeping and the establishment of a management system are essential. By utilizing Excel templates, you can streamline operations through automatic calculations and customization while keeping initial costs low. However, it is also necessary to consider challenges such as formula errors and security risks. In this article, in addition to how to utilize attendance sheet templates, we will also introduce the software "Sakumiru," which enables high-precision attendance management. If you want to enhance the reliability of your records, please take a look. *For detailed content of the article, you can view the PDF materials. For more information, feel free to contact us.*

The construction industry continues to face a serious labor shortage, which is impacting productivity and project timelines on-site. Several factors are intricately intertwined in this issue, including the aging population, challenges related to wage levels, and a labor shortage due to expanding demand. This article will organize the fundamental reasons behind the labor shortage in the construction industry and provide a detailed explanation of specific measures that companies and sites can implement. Additionally, it will touch upon examples of system reforms and the use of digital transformation tools, introducing initiatives that are necessary for the future of the construction industry. For business owners and site managers struggling with labor shortages, we hope this serves as a useful reference for considering future measures. *For more detailed information, please refer to the PDF document. Feel free to contact us for further inquiries.*

In the construction industry, the serious labor shortage and the promotion of work style reforms have made improving productivity a pressing issue. It has become necessary to implement comprehensive improvements, not only in the efficiency of on-site work but also in administrative tasks, information sharing, and organizational management. However, many companies are struggling with issues such as "I don't know where to start" and "We introduced tools, but they haven't been adopted." This article will broadly explain the structural reasons why productivity in the construction industry tends to decline, specific improvement measures that can be implemented starting today, actual success stories, and considerations for choosing tools. *For detailed content of the article, please refer to the PDF document. For more information, feel free to contact us.*

Independent contractors and small businesses in the construction industry often find that as their annual contracts increase in value, the burden of consumption tax and stamp duty becomes heavier, leading to a decrease in the profits they retain. This article provides a gentle explanation of legal and practical tax-saving techniques for business owners facing such concerns. It covers everything from expense management, savings on stamp duty through electronic contracts, the use of blue return filing and small-scale depreciation, to regular equal salaries and company housing systems, all aimed at minimizing the burden of consumption tax, income tax, and business tax while maximizing available funds. The content is easy to understand for beginners and progresses step by step, making it accessible even for those who are not confident in accounting. We encourage you to read this as the first step in creating a system that allows you to efficiently retain cash and focus on your work on-site. *For detailed content of the article, please refer to the PDF materials. For more information, feel free to contact us.*

Construction sites involve high-altitude work and the use of heavy machinery, making them industries with a high risk of accidents. This is where workers' compensation insurance becomes essential, but many people have questions such as, "What is a consolidated fixed-term project?" "Are the procedures different for general contractors and subcontractors?" "How far does the insurance coverage extend?" This article is aimed at construction business owners, site supervisors, and independent contractors considering going solo, and it clearly summarizes: - The structure and types of workers' compensation insurance - The requirements and benefits of "consolidated fixed-term projects" for small-scale construction - Common pitfalls in the application process and key checkpoints By reading this article, you will grasp all the basics and important points to avoid confusion in practice. *For detailed content of the article, you can view it in the PDF document. Please feel free to contact us for more information.*

In the construction industry, in order for the main contractor and subcontractor to build a healthy business relationship, it is essential to set an appropriate estimation period at the request stage and accurately convey the necessary information. The Construction Business Act specifically stipulates the estimation period and its notification method, and neglecting this can lead to administrative guidance or a risk of losing credibility. This article will provide a detailed explanation of the minimum number of days for the estimation period based on Article 20 of the Construction Business Act and the enforcement order, the rules for the starting date, the conditions under which a reduction is permitted in unavoidable circumstances, and actions that are considered an abuse of superior bargaining position. Additionally, it will cover internal rules, checklists, and key points for manualization to prevent troubles in advance, offering practical tips for everyone involved in the construction industry to engage in estimation request tasks with peace of mind. *For detailed content of the article, please refer to the PDF document. For more information, feel free to contact us.*

For everyone working at construction sites, the summer "heat" is a matter of life and death. Due to regulatory changes effective June 1, 2025, at sites where the WBGT (Wet Bulb Globe Temperature) exceeds 28°C, or the temperature exceeds 31°C, and continuous work above a certain threshold occurs, systems, procedures, and awareness have been mandated by law (Ministry of Health, Labour and Welfare "Heatstroke countermeasures will be mandatory from June 2025"). This article organizes the key points of this mandate and provides detailed explanations of practical measures that can be used on-site, including WBGT measurement, plans for breaks and hydration with salt, initial responses in emergencies, a checklist for managers, and low-cost equipment and IoT utilization. Especially for small construction businesses with fewer than 50 employees, balancing "safety of human life" and "business continuity" is essential. We provide a wide range of know-how that site managers and business owners can implement immediately. *For detailed content of the article, please refer to the PDF materials. For more information, feel free to contact us.*

Creating construction estimates is one of the important tasks in the construction industry. By making accurate estimates, companies can control their profits and prevent losses. On the other hand, vague estimates can lead to an incorrect understanding of costs, which may ultimately pressure profits. This article will provide a detailed explanation of the basic role of construction estimates, the content that should be included, and the actual methods for creating them, aimed at those who say, "I don't know how to create a construction estimate," "I have concerns about the content of the items listed," or "I want to improve the efficiency of creating estimates." Additionally, we will introduce a recommended software for streamlining the estimate creation process, "Sakumiru." *For detailed content of the article, you can view it in the PDF document. Please feel free to contact us for more information.*

When planning a construction project, the "building confirmation application" is an important procedure that you will encounter first. This article comprehensively explains the definition of the application, its legal background, necessary documents, costs, processes, and even "cases where application is not required." Additionally, we will introduce the benefits of hiring an architect and methods for improving efficiency using the cloud tool "Sakumiru." This is a practical guide for those about to start construction and for businesses responsible for application tasks. *You can view the detailed content of the article in the PDF document. For more information, please feel free to contact us.*

Have you ever heard the term "site management costs" in the construction industry? Site management costs are the expenses necessary for smoothly and safely progressing actual construction work, and they are an important cost item that is included in estimates and contracts. However, many people may have questions about the specifics of site management costs, how they differ from general management costs, and what percentage should be set. This article comprehensively explains the definition of site management costs, their differences from general management costs, breakdown items, calculation guidelines, and methods. It is a valuable reference for construction business owners, site managers, and anyone who will be involved in the construction industry. *For detailed content of the article, you can view it in the PDF document. Please feel free to contact us for more information.

The "site representative" is responsible for a wide range of tasks at construction sites, including construction management, schedule coordination, and safety management. Do you have a correct understanding of their role, the necessary qualifications, and how they differ from other engineers? This article will provide a detailed explanation of the definition of a site representative, their job responsibilities, required skills, placement obligations under the Construction Business Act, and the differences between chief engineers and supervising engineers. We will provide useful information for those aiming to become site representatives or considering career advancement in the construction industry. *You can view the detailed content of the article in the PDF document. For more information, please feel free to contact us.*

At construction sites, it is important to document the progress and completion of work with photographs. Construction photos not only help accurately understand the site conditions and prevent potential issues, but they also serve as valuable materials for explaining to customers and confirming the details of the work. Furthermore, in some cases, the recording of construction photos is legally mandated, making it essential to comply. Inadequate documentation can lead to issues of liability due to lack of evidence, and in the worst case, there is a risk of administrative guidance or penalties. Therefore, proper photographing and management of construction photos are indispensable tasks for maintaining the reliability of site operations. This article will provide a detailed explanation of the risks associated with not taking construction photos, the correct procedures for taking them, and efficient management methods. Additionally, we will introduce items and tools that make construction photo shooting even more convenient, so please make use of them to enhance your daily work efficiency. *For detailed content of the article, you can view the PDF materials. For more information, please feel free to contact us.*

In the construction industry, as digitalization accelerates, the introduction of construction ledger software has become the key to improving operational efficiency. Traditional management using paper or Excel is cumbersome and presents challenges in information sharing and updates. This article will explain the basic roles of construction ledger software and the benefits of its implementation in detail, as well as provide clear guidance on what points to focus on when selecting one. Additionally, for those who are wondering, "I want to implement software, but I don't know which one to choose," we will also introduce recommended construction ledger software. If you are considering "wanting to improve operational efficiency," "wanting to reduce management burdens," or "wanting to achieve cost reductions," please read on until the end. *For detailed content of the article, you can view it in the PDF document. For more information, please feel free to contact us.*

Although there are many opportunities to see or hear the term "san" at construction sites, there may be surprisingly few people who fully understand its exact meaning and distinctions. In this article, we will carefully explain the basics of "san," its differences from "sanmoku," its types, roles, dimensions, materials, how to choose it, and even points to note regarding its notation and reading, all from a practical perspective. By reading this, any confusion regarding "san" will be resolved, leading to more accurate material selection and specification instructions on site. *For detailed content of the article, please refer to the PDF document. For more information, feel free to contact us.*

Many people may feel unsure about construction site management, related documents, what to do and how to prepare for it. Do you have any concerns regarding the preparation of the construction procedure manual? - "I don't understand what a construction procedure manual is, or its specific content and role." - "The differences between the construction procedure manual, construction plan, and work procedure manual are unclear and I get them confused." - "I am anxious because the steps for creating the construction procedure manual, submission deadlines, and checkpoints are not clear." This article provides information to help resolve these concerns. We will deeply explain the basic definition of the construction procedure manual, its differences from related documents, creation steps, submission deadlines, and checkpoints. Additionally, we will introduce methods to streamline construction management. *You can view the detailed content of the article in the PDF document. For more information, please feel free to contact us.*

In the construction industry, properly managing the income and expenses of projects is a crucial element that supports the foundation of management. Among these, the "execution budget" is positioned as an indispensable tool for ensuring the profitability of projects and conducting appropriate cost management. In recent years, the construction industry has faced various management challenges, such as labor shortages and soaring material prices. In particular, the rise in raw material costs and increases in labor costs have a significant impact on the profitability of projects. In such circumstances, more meticulous budget management has become essential to secure stable profits. This article will provide a detailed explanation of the basic concepts of execution budgets, specific methods for creating them, and how to utilize convenient templates and construction management systems. *For detailed content of the article, please refer to the PDF document. For more information, feel free to contact us.*

The final discount is a "last discount" that returns the surplus created through corporate efforts to customers in the form of rounding adjustments and other methods. In this article, we will clearly explain the meaning in the construction industry, four benefits, the timing of presentation, the correct way to write estimates and invoices, and the relationship with antitrust laws and subcontracting laws. *You can view the detailed content of the article in the PDF document. For more information, please feel free to contact us.

The "Attendance Sheet" at construction sites visualizes who worked, when, and where, serving as a foundational document for labor, wages, and safety management. This article organizes the purpose and items to be recorded in the attendance sheet, and through points on utilizing Excel templates and comparing paper and digital operations, it provides a detailed explanation of the use of "Sakumiru" as an entry point for efficient site digital transformation (DX). *For more detailed information, you can view the PDF materials. Please feel free to contact us for more details.*

In the electrical construction industry, the low profit margin has been a long-standing issue. The main factors include rising material and outsourcing costs, increasing labor expenses, and intensified price competition. To address these challenges, it is essential to thoroughly manage costs and establish an efficient construction system. Additionally, providing high-value-added services and setting appropriate prices are also important strategies. This article explains the current average profit margin and cost ratio in the electrical construction industry and introduces specific methods for improving profit margins. Let's aim for improved profitability through efficient cost management and project management. *For detailed content of the article, please refer to the PDF document. For more information, feel free to contact us.*

The Telecommunications Chief Engineer is the "network supervisor" that operators are required to appoint under the Telecommunications Business Act. Among the national exams held twice a year, the next one is scheduled for July 13, 2025, with a pass rate of approximately 30%, indicating a mid to advanced level of difficulty. By utilizing the subject exemption system, you can significantly reduce your study load. Obtaining this qualification will fulfill the placement requirements in telecommunications carriers and the construction industry, and you can also expect practical benefits such as an increase in annual income and meeting the technical requirements for public works bidding. This article comprehensively covers the exam overview, difficulty, study methods, and how to leverage your career after passing, providing thorough support for obtaining the Telecommunications Chief Engineer qualification. *For detailed content of the article, please refer to the PDF materials. Feel free to contact us for more information.*

"What is the difference between special construction business and general construction business?" "In the end, do we need to apply for a special construction business?" Do you have such concerns? Obtaining a construction business license is essential when starting or expanding a construction business. However, there are two types of licenses: "general construction business" and "special construction business," and if you do not fully understand their differences, requirements, and necessary situations, it could lead to problems later on. This article will carefully explain the differences between special construction business and general construction business, as well as the conditions for obtaining a license. It will be useful for those who are unsure about their application decisions or are considering future applications. Please read to the end. *You can view the detailed content of the article in the PDF document. For more information, please feel free to contact us.*

In architectural spaces, "ranma" is not just a decoration. As a traditional fixture that enhances the space with light and shadow while maintaining daylight and ventilation, it is being reevaluated in today's modern Japanese homes and renovations. However, during the design, ordering, and construction phases, various considerations such as insulation, airtightness, and fitting adjustments come into play. This article will start by explaining "what ranma is," followed by a comprehensive discussion of the characteristics of different types, such as carvings, openwork, kumiko, and shoji, as well as price ranges, possibilities for remaking and purchasing second-hand, design examples, and key points during ordering and construction. Additionally, it will touch upon the advantages of Sakumiru, which supports core business functions for construction companies (such as estimating, scheduling, customer, and billing management), providing practical information that can be immediately useful. *For detailed content of the article, please refer to the PDF document. For more information, feel free to contact us.*