When developing an application for internal company use, employees must be cautious about releasing a generalized version publicly, such as on GitHub. It is crucial to consult with the employer, as they may hold intellectual property rights over the work, even if created during personal time. Most employment agreements include clauses that grant the company ownership of any related intellectual property. Local intellectual property laws typically support this stance, and unauthorized release could lead to job loss and legal consequences.The key question is whether the employer would permit such a release, which can depend on corporate culture and the potential impact on business interests. Some employers may be open to negotiations regarding ownership of work done outside of company hours, especially if the employee has established expertise. However, any agreements should be made before starting the job to avoid future conflicts.