Work management device, work management method, and recording medium

A work management method executed by an information processing device, the method comprising:

• acquiring, after login to a system using a first terminal, (i) login information associated with a worker including a user ID, a terminal ID, and a login time, and (ii) an operation history of the first terminal in which each operation record includes an operation type and operation start and end times;
• storing the login information and the operation history in a storage unit;
• acquiring a setting of an inter-work interval reference time (T_I) that indicates a minimum time interval between an end of work on one day and a start of work on a next day;
• specifying a non-operation period for the first terminal by (a) identifying, in the operation history, a gap between an end time of a first operation and a start time of a next operation, (b) treating, as no operation, an operation satisfying predetermined noise conditions including at least one of:
• a duration shorter than a first threshold (T1), an acquisition order condition, and surrounding non-operation periods longer than second and third thresholds (T2, T3), and (c) when an operation history from a second terminal is acquired within the gap, fixing a non-operation period for the first terminal from the end time to a start time at which the operation history of the second terminal is acquired;
• analyzing, using image recognition technology, a plurality of images taken by capturing the worker at different times to detect a first time at which the worker wears clothes worn during work and a second time at which the worker takes off the clothes worn during work by comparing clothing states between different time points, and
• calculating working hours of the worker by including a non-operation period shorter than T_I and excluding a non-operation period equal to or longer than T_I, and, when a prescription time obtained from the system is later than a last operation end time on the one day, wherein the calculating the working hours of the worker is based on the first time and the second time;
• replacing at least a portion of an excluded period with a period from the prescription time;
• and
• recording the calculated working hours in the storage unit.

A non-transitory recording medium storing a program for causing a computer to execute:

• a process of acquiring, after login to a system using a first terminal, (i) login information associated with a worker including a user ID, a terminal ID, and a login time, and (ii) an operation history of the first terminal in which each operation record includes an operation type and operation start and end times;
• a process of storing the login information and the operation history in a storage unit;
• a process of acquiring a setting of an inter-work interval reference time (T_I) that indicates a minimum time interval between an end of work on one day and a start of work on a next day;
• a process of specifying a non-operation period for the first terminal by (a) identifying, in the operation history, a gap between an end time of a first operation and a start time of a next operation, (b) treating, as no operation, an operation satisfying predetermined noise conditions including at least one of:
• a duration shorter than a first threshold (T1), an acquisition order condition, and surrounding non-operation periods longer than second and third thresholds (T2, T3), and (c) when an operation history from a second terminal is acquired within the gap, fixing a non-operation period for the first terminal from the end time to a start time at which the operation history of the second terminal is acquired;
• a process of analyzing, using image recognition technology, a plurality of images taken by capturing the worker at different times to detect a first time at which the worker wears clothes worn during work and a second time at which the worker takes off the clothes worn during work by comparing clothing states between different time points;
• a process of calculating working hours of the worker by including a non-operation period shorter than T_I and excluding a non-operation period equal to or longer than T_I, and, when a prescription time obtained from the system is later than a last operation end time on the one day, wherein the process of calculating the working hours of the worker is based on the first time and the second time;
• a process of replacing at least a portion of an excluded period with a period from the prescription time;
• and
• a process of recording the calculated working hours in the storage unit.