Table 1.

Equilibrium solution stability conditions

Equilibrium	Trivial: (0,0)	Quiescent: (1,0)	Laboring: (0,1)	Intermediate: $\left(\frac{i(1-b)}{k-\mathit{\text{ib}}},\frac{b(k-i)}{k-\mathit{\text{ib}}}\right)$
Eigenvalues (λ 1, λ 2)	(b,i)	(i−k,−b)	(b−1,−i)	$\left(\frac{-\beta +\sqrt{({\beta }^2-4\gamma )}}{2},\frac{-\beta -\sqrt{({\beta }^2-4\gamma )}}{2}\right)$
Stability	Unstable	Stable	Stable	Unstable
Condition	b>0 and i>0	(i<k,b>0)	(b<1,i>0)	b>0 and i>0