Belgium

15 weeks total (6 prenatal + 9 postnatal mandatory). 1 week before birth is obligatory prenatal rest. Optional 5 prenatal weeks can be taken before or after birth. Protected from dismissal from employer awareness of pregnancy until 1 month after end of postnatal leave. Source During the first 30 days (or 5 weeks considersing a 6 day work week) of your maternity leave it's 82% of uncapped gross salary. For the rest it's 75% of your gross salary per day, capped on the basis of the salary cap (INAMI/RIZIV ceiling for a 6 day work week - currently €183.13 * 0.75 = €137.35). The rate is hence calculated to be (5 * 0.82 + 10 * 0.75) / 15 = 77% over the time and the cap is calculated based on 82% of the average wages for the first 5 weeks and 6 * €137.35 = €824.10 for the rest. Source

No shareable birth leave, however shareable parental leave.

10 days to be taken within 4 months of birth; can be spread flexibly. Protected from dismissal from written notification until 3 months after notification. Source First 3 days paid by employer at 100% of gross salary. Remaining 7 days paid by health insurance fund at 82% of capped gross salary (INAMI/RIZIV ceiling for a 6 day work week - currently €183.13 * 0.82 = €150.17). The rate is hence calculated with the forumla of (3 * 1.0 + 7 * 0.82) / 10. The cap per week is calculated using the 6 * €150.17 = €901.02 per week for 70% of the time plus the average gross salary for 30% of the time. Source

Each parent independently entitled to 4 months full-time parental leave per child, usable until child turns 12 (21 for disabled child). Can be taken as: full-time (4 months), half-time (8 months), 1/5th reduction (20 months), or 1/10th reduction (40 months, employer agreement required). Leave can be split into separate months. Requires 12 months employment with employer in prior 15 months. Also available for adoption. Source Flat-rate RVA/ONEM interruption allowance, not salary-based. All four modes (full-time, half-time, 1/5th, 1/10th) are paid at different flat rates. Full time rates are €1,038.11 gross and €932.95 net per month. Source

We calculate the figures with first 5 weeks it's uncapped 82% gross salary, for the next 10 it's a capped (at €137.35 per day) 75% gross salary. Parental leave pay is a net flat fee. During the birth year income will be lower, decreasing the average tax rate (34.9 and 26.3% when taking both maternity and parental leave), which are used in the calculations.

Parental pay is calculated using the 100% uncapped gross salary for 3 days and 82% capped salary for 7 days. Parental leave pay is a net flat fee. While just taking paternity leave will keep the same average tax rate, taking both paternity and parental leave will decrease the average tax rate to 31.4%.