Index $\in$ set	Description
$c\in C$	Specialties
$r\in R$	OT-Rooms
$t\in T$	Days in the planning horizon
$t\in O$	Days without elective surgery,$O\subseteq T$
$i\in I$	Block or Patient type (Ward block = 0 or ICU block = 1)
$s\in S$	Shifts in a day (early, late, night)
Parameters
$L_{c,t}^{\mathrm{ICU}}$	Probability that a patient from specialty $c$ stays at least $t$ days in the ICU
$E_{c,t}^{\mathrm{ICU}}$	Probability that a patient from specialty $c$ stays exactly $t$ days in the ICU
$L_{c,t,i}^{\mathrm{Ward}}$	Probability that a patient from specialty $c$ stays at least $t$ days in the ward with prior transfer from the ICU $(i=1)$ or OT $(i=0)$
$E_{c,t,i}^{\mathrm{Ward}}$	Probability that a patient from specialty $c$ stays exactly $t$ days in the ward with prior transfer from the ICU $(i=1)$ or OT $(i=0)$
$B_c^{\mathrm{Max}}$	Maximum number of daily MSS blocks for specialty $c$
$B_c^{\mathrm{Total}}$	Required number of MSS blocks in the planning horizon for specialty $c$
$P_c^{\#}$	Average number of patients in each block for specialty $c$
$P_c^{\mathrm{Share}}$	Target ICU share for specialty c over the planning horizon
$N_s^{\mathrm{ICU}}$	Patient-to-nurse ratio in the ICU in shift $s$
$N_{c,s}^{\mathrm{Ward}}$	Patient-to-nurse ratio in ward $c$ in shift $s$
$A_s^{\mathrm{ICU}}$	Physician time associated with an ICU admission in shift $s$
$R_{t,s}^{\mathrm{ICU}}$	Physician time associated with ICU daily routine for each patient on day $t$ in shift $s$
$D_s^{\mathrm{ICU}}$	Physician time associated with a discharge from the ICU in shift $s$
$A_{c,s}^{\mathrm{Ward}}$	Physician time associated with a patient admission in a ward with specialty $c$ in shift $s$
$R_{c,t,s}^{\mathrm{Ward}}$	Physician time associated with daily ward routine for each patient in time slot $t$ for specialty $c$ in shift $s$
$D_{c,s}^{\mathrm{Ward}}$	Physician time associated with a discharge from a ward with specialty $c$ in shift $s$
$H_{t,s}$	Shift length for ICU and ward stations on day $t$ in shift $s$
${\overline{M}}_{c,r,t}$	Preexisting MSS assignments (if necessary); 1 if specialty $c$ has room $r$ on day $t$, 0 otherwise
$\alpha$	Penalty weight for the maximum nurse workload in the ICU and wards
$\beta$	Penalty weight for the maximum physician workload in the ICU and wards
$\gamma$	Penalty weight for the number of ICU blocks
Decision variables
$m_{c,r,t,i}$	1 if specialty $c$ has room $r$ on day $t$ with block type $i$, 0 otherwise
$b_{c,r,t}^{\mathrm{Share}}$	ICU share in a block of specialty $c$ in room $r$ on day $t$
$n_{t,s}^{\mathrm{ICU}}$	FTE of ICU nurses required on day $t$ in shift s
$n_s^{\mathrm{ICUMax}}$	Maximum FTE of ICU nurses in shift $s$ within the planning horizon
$p_{t,s}^{\mathrm{ICU}}$	FTE of ICU physicians required on day $t$ in shift $s$
$p_s^{\mathrm{ICUMax}}$	Maximum FTE of ICU physicians in shift $s$ within the planning horizon
$n_{c,t,s}^{\mathrm{Ward}}$	FTE of ward nurses required for specialty $c$ on day $t$ in shift $s$
$n_{c,s}^{\mathrm{WardMax}}$	Maximum FTE of ward nurses for specialty $c$ in shift $s$ within the planning horizon
$p_{c,t,s}^{\mathrm{Ward}}$	FTE of ward physicians for specialty $c$ on day $t$ in shift $s$
$p_{c,s}^{\mathrm{WardMax}}$	Maximum FTE of ward physicians for specialty $c$ in shift $s$ within the planning horizon
$y_{c,t,i}$	Auxiliary variable for the ward admissions of patient type i specialty $c$ on day $t$
$z_{c,r,t}$	Auxiliary variable for linearization