Table 3.

Model parameters of the case company for nursing staffing optimisation.

	Value
Parameter
C	{1, 2, 3}
D 1	{1, 2, ..., 15}
D 2, D3	{1, 2, ..., 6}
D 1 t , D2t, D3t	{0}
Q′	{1}
D 1′	{16, 17,…, 30}
D 2′, D3′	{7, 8,…, 12}
R	{1}
S	{1, 2,…, 90}
T	{1, 2,…, 28}
W′	{1, 2, 3, 4}
T 1 w,max, T2w,max, T3w,max	14
S 1j, C1h, C1f	$8,500
S 2j, C2h, C2f	$12,000
D 1 ″	{1, 2, ..., 15}
T 1 max, T2max, T3max	12
S 3j, C3h, C3f	$20,000
R 1j otp	130
R 2j otp	180
R 3j opt	230
C 1 t	130
C 2 t	180
C 3 t	230
D 2 ″, D3″	{1, 2, ..., 6}
T 1 w,max, T2w,max, T3w,max	18
N 1	53
X 1 w,max, X2w,max, X3w,max	6
O 1m max, O2mmax, O3mmax	4
U	8
Other information
Total service time (in minutes) required in shift 1, 4, 7,…, 82, 85, 88	1725
Total service time (in minutes) required in shift 2, 5, 8,…, 83, 86, 89	2355
Total service time (in minutes) required in shift 3, 6, 9,…, 84, 87, 90	1020
Total monthly staffing cost	$319, 500