Positions becoming vacant unless excepted as provided by § 506.7, will be reviewed to determine the feasibility of converting them to part-time. Among the criteria which may be used when conducting this review are:
(a) Mission requirements and occupational mix.
(b) Workload fluctuations.
(c) Employment ceilings and budgetary considerations.
(d) Size of workforce, turnover rate and employment trends.
(e) Affirmative action.