OHS Information System (Occupational Health and Safety) In PT. United Tractors Tbk, Site-Satui Mobile Web-Based

Received Oct 1, 2020 Revised Feb 10, 2021 Accepted April 25, 2021 Medical Check-Up (MCU) is a health check Overall, which is carried out to monitor the health of employees at PT United Tractors Tbk, Site Satui, which is expected from this examination to detect a disease or health problem from an early age, PT United Tractors Tbk, Site-Satui is one company that requires a system that can monitor health. and the safety of employees at work. Therefore, an occupational health and safety (OHS) system was built, which is expected to assist in monitoring the results of medical check-ups for an employee (MCU), sending health information, monitoring employee health level charts. This occupational health and safety system were built using the method prototype, made using the programming language Hypertext Preprocessor (PHP) and the MySQL database, designed using Data Flow Diagrams (DFD), Entity Relationship Diagrams (ERD), and Flowcharts.

problems or is not fit at work, he can be given a warning about his health. The importance of employee health in working at PT United Tractors, Tbk Site-Satui is very important, to reduce the risk of work accidents.
The importance of occupational health and safety is often conveyed during Safety Talk and Healthy Talk activities every week at PT United Tractors, Tbk Site-Satui, to remind employees about the importance of health and safety at work [1]. But even so, sometimes there are still people who forget to pay attention to health at work [2], which can cause an undesirable event that will harm employees and the company. The health of each employee at PT United Tractors, Tbk Site-Satui is recorded in a file and stored in a box, sometimes some are scattered in the sense that there is a missing record file Medical Check-Up (MCU) [3] so that the employee cannot see the results of his examination, sometimes there are employees who ignore the results of the examination so that when they are asked for their medical records, they will be confused. Health records that are still conventional, in the sense that they are still written on paper and the personal reports of each employee are what makes it difficult for the next examination Medical Check-Up (MCU), with a large number of employees and the absence of specialized personnel to handle it, so it occurs an increase in the number of follow-up Medical Check-Up (MCU) that are not monitored and documented.
The increasing number of follow-up Medical Check-Up (MCU) which continues to increase causes an uncontrolled notification to employees who have special records, and there is no routine notification of health to employees, which causes frequent employee negligence in carrying out further examinations, and the absence of health status which is written also, the next factor is employees who are too busy at work, so that employees cannot control their health without waiting for notification from the boss [1]. The current problem is that no system controls the health of employees, so this is what causes the level of the number of follow-up Medical Check-Ups (MCU) to continue to increase and not be controlled or documented routinely.
The solution to the problem that occurs is to create an information system about the health and safety of employees so that in the future it can assist in health monitoring, reminders, sending notifications, and displaying the health statistics of each employee who works. Based on these problems, the authors raised the title "Information Systems OHS (Occupational Health and Safety) at PT United Tractors, Tbk Site Satui based on Mobile Web" as research in completing the final project.

THEORETICAL 2.1. Information Systems Information
Systems are a combination of components or rules in which there is data that is processed whether it is collecting, modifying, or disseminating information to an organization, which can be accessed with a free place and time in an unspecified sense [4].

OHS (Occupational Safety and Health)
Occupational Health Safety is the smooth running of an activity that greatly affects the level of safety and comfort of a working environment [5] and is also supported by equipment that is fit for use and does not endanger workers.

Mobile
Web The mobile web is a web page that is accessed on a device mobile with a small physical build and is made with PHP and Javascript scripts, as for the example of the Mobile Web is an application whose user interface can be made consistent for all devices (multiplatform), does not depend on the play store or app store, and can be opened almost in all types of browsers found on all platforms [6].

Entity Relationship Diagram (ERD)
Entity Relationship Diagram (ERD) is a diagram used for design database on requirements indevelopment system that includes detailed descriptions of entities, relationships, and boundaries, there are several cardinalities, namely one-to-one, one-to-many, and many-to-many [7].

Data Flow Diagrams (DFD)
Data Flow Diagrams (DFD) is a data logic model or process created to describe where the data comes from and where the data output from the system is, where the data is stored [8], what process produces the data, and the interaction between the stored data and the processes imposed on the data [9].

Blackbox
Testing black-box is software testing the activity of the specific terms of the functionality of the system created and performed by creating a test case that has the nature to try all the existing functionality within the system following the necessary specific [7].

RESEARCH METHOD 3.1. Stage Data Collection
There are also data collection stages, including the following: a. The Book Method The method that uses books and literature other such as reading books, journals, articles, and other sites in writing that can help the application development process is done by collecting data and information that can be justified for the correctness of the data, so the authors use this method [4].

b. The Interview Methode
The method is a method of collecting data by conducting questions and answers with employees [10] at PT United Tractors Tbk, Site-Satui, to obtain data and information that supports the making of applications and reports from the OHS Information System (Occupational Health and Safety) at PT United Tractors Tbk, Site-Satui.

Development
The model development that the author uses is Prototype, whose stages can be seen in the image below.  [10], in the image above, namely: 1. Collection of needs: At this stage, the author discusses with the field supervisor the needs needed in developing the application to be made. 2. Building Prototyping: At this stage, the writer makes a design of the application display which will be used as a display application that is made. 3. Evaluation: At this stage, the writer submits the design results of the display design to the company to see whether it is appropriate or not. 4. Encoding: At this stage, the author is carried out after the results of the display design have been agreed upon by the company, which then the authors do the coding system. 5. System Testing: At this stage, the author is carried out after the coding of the system has been completed which is then tested by several parties from employees at PT United Tractors Tbk, Site Satui, including for employee users, officers, and admin by holding meetings, as a method. Blackbox and the response time are done by opening the application at the same time.
International Journal of Research in Vocational Studies, Vol. 1, No. 1, September 2021: 01 -10 4 6. System Evaluation: At this stage the writer evaluates the application after testing the system and analyzes the errors or errors that occur in the application, this stage is very important for the smooth running of the application. 7. System Usage: Software that customers have tested and accepted is ready for use. This stage is carried out after the system is running and system maintenance is carried out.

System Analysis a. Current System Analysis
In the current system, the officer will first manage the results of the employees' MCU which will be stored or archived in a Bantex. Furthermore, for employees who will see the results of their MCU, each them will ask the officer, at the next stage the officer will notify reminder messages and tips about health in a conventional way through group chat or sometimes written on an announcement board located in the room the service office, and then the next stage the employee will receive the results of the MCU records in paper form and if there is a further inspection, the employee will submit the results to the officer for safekeeping [7].

. Analysis of The Proposed System
In the Analysis of the Proposed System, data on the results of Medical Check-Up will be entered into the system, so that it can help employees who want to see the results of the MCU only through the system without having to report to the officer first, and also if there is Sharing Health or reminder messages officers do not need to notify employees one by one but through the system [7].

OHS Information System (Occupational Health and Safety) In PT. United Tractors Tbk, Site-Satui Mobile
Web-Based (Maya Gian Sister) 5 Figure 3. Analysis of the proposed system

System Design a. Entity Relationship Diagram (ERD)
The design of the Entity-Relationship Diagram has 12 entities, namely accounts, access, area, area depart, department, Medical, standards, type Medical, conclusion, position, employee type, sharing, and reminder. Employee entity is a master table related to all entities [11].  Figure 5 is a context diagram with an explanation that Admin can manage, Login data Medical, data, graphic data, employee data, reminder data, conclusion datatype data Medical, standard data Medical, employee type data, and data sharing. Officers can manage data login, data Medical, graphic data, employee data, reminder data, sharing data, and employee type data. Employees can manage login data medical, data, reminder data, sharing data, and graph data [12].

.3. Implementation a. Login Page
Implementation of the design Page Login can be seen in the image below. On viewing the page, login there are two textbox input username and password, wherein the interface design page login there is a form input the username and password the from a user and then there is a login button for submission, after which the user did submit the user will directly enter the appropriate page with the level.

Testing System
The testing system used by using Blackbox, here are the results of the testing system is done. Adding employee data can add employee data, which data will enter the database and appear on the Employee data menu in the system Valid 5.
Changing employee data can change Employee data, whose data will be changed in the database and appear on the Employee data menu in the system Valid 6.
Deleting employee data can delete employee data, which data will be deleted in the database. Adding reminder data can add reminder data whose data will be entered into the database and appear on the reminder data menu in the system and sent to email employee automatically every week after filling in the results of MCU valid 12.
Deleting data reminders can delete reminder data, which data will be deleted in the database. can change medical conclusion data whose data will be changed in the database and appear in the medical conclusion data menu.

18.
Deleting data medical conclusion can delete medical conclusion data whose data will be deleted in the database.

19.
Viewing employee data can see employee data that is added Valid 20.
Adding employee data can add employee data, whose data will be entered into the database and appear on the employee data menu.

21.
Viewing medical data employee can see employee medical data added Valid

22.
Adding employee medical data can add employee medical data, the data will be entered into the database and appear on the employee medical data menu Valid 23.
Printing medical data Employees can print employee medical data whose data will be printed according to the date entered.
Valid 24. logout from system can logout from system Valid 25. View condition data can see employee condition Valid

CONCLUSION
Based on the results and discussion of the final that has been carried out, it can be concluded, in making this system there are several stages, including data collection, development prototype, to application development which includes making Entity Relationship Diagram (ERD), Data Flow Diagrams (DFD), Flowcharts, Design Interface, implementation Interface, and system testing. Making this system using the PHP programming language with MySQL as the database and Website 2 APK Builder Pro 3.4.0 as a converter into