When defining optimisation, special attention should be paid to its nature. This is because it is the process of maximising the efficiency, effectiveness or usefulness of something/someone. Its business context most often concerns production processses or human resource management. Hence, change, i.e. the fact that something/someone becomes different than before, is an inherent factor supporting improvement and the processes parantelleling it.The aim of this article – against the background of relevant literature on issues related to defining and processes of implementing change in enterprises: books and academic articles, online sources – is to present the results of empirical research into the most significant determinants supporting the implementation of change in a manufacturing enterprise and employee attitudes in assessing the implementation of change, using a selected manufacturing enterprise as an example. In order to achieve the objective, two questionnaire surveys were conducted: GIN=158(2022) and GIIN=137(2023) using a five-point Likert scale, a scrollable list and giving the opportunity to write an individual response. To describe the research results obtained, mathematical analysis tools were used to construct tabular summaries and then present the conclusions drawn from them. The results of the survey indicated a gap in terms of motivating employees for change processes. An increase in positive attitudes towards the implementation of change (ratings: very good, good respectively) was observed at 3% and 13%. However, there was a general increase in the number of people who do not want to participate in polemics regarding change processes in optimisation aspects by 6%, what more: the statistics for the negative evaluation of the introduction of such changes showed a negative trend. The research provided valuable and practical information, which was used by company managers to take measures to increase the motivation of employees to per- ceive change processes and understand their optimising aspects in the managed company.