Appendix D: Gaps in the evidence
PHIAC identified a number of gaps in the evidence relating to the interventions under examination, based on an assessment of the evidence. These gaps are set out below.
There was very limited UK-based evidence that met the inclusion criteria for this guidance on organisation-wide approaches that aim to improve the mental wellbeing of employees within different sectors, different occupations and organisations of different sizes.
There was a lack of common definitions of terms for measurement of both positive and negative aspects of mental wellbeing at work, with associated validated instruments.
There was a lack of evidence on the factors that help or hinder the development and implementation of organisation-wide approaches to promoting the mental wellbeing of employees in micro, small and medium-sized businesses.
There was a lack of evidence of the costs and benefits of organisation-wide approaches to promoting the mental wellbeing of employees (including the costs associated with presenteeism as well as absenteeism) in different sectors and organisational settings.
The Committee made four recommendations for research. These are in section 5.